1. WeatherSpark.com
  2. Tonga

Climate and Average Weather Year Round at Vava'u International Airport Tonga

The climate at Vava'u International Airport is warm, oppressive, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 71°F to 85°F and is rarely below 68°F or above 87°F.

Based on the tourism score, the best time of year to visit Vava'u International Airport for warm-weather activities is from mid June to late September.

Climate at Vava'u International Airport

warmhotwarmJanFebMarAprMayJunJulAugSepOctNovDecNowNow58%58%20%20%overcastclearprecipitation: 6.6 inprecipitation: 6.6 in1.6 in1.6 inmuggy: 100%muggy: 100%68%68%tourism score: 7.6tourism score: 7.63.83.8
Vava'u International Airport weather by month. Click on each chart for more information.

The temperature at Vava'u International Airport varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature at Vava'u International Airport

Average High and Low Temperature at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJul 1579°FJul 1579°FFeb 1685°FFeb 1685°F71°F71°F77°F77°FDec 1184°FDec 1184°FApr 1784°FApr 1784°FJun 1380°FJun 1380°FSep 2080°FSep 2080°F76°F76°F76°F76°F73°F73°F72°F72°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 84°F85°F85°F84°F81°F80°F79°F79°F80°F81°F82°F84°F
Temp. 80°F81°F81°F80°F77°F76°F74°F75°F75°F77°F78°F80°F
Low 77°F77°F78°F76°F74°F73°F71°F72°F72°F73°F75°F77°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature at Vava'u International Airport

Average Hourly Temperature at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowcomfortablecomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Trinity Ville, Jamaica (7,085 miles away) is the far-away foreign place with temperatures most similar to Vava'u International Airport (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Vava'u International Airport to another city:

Map

At Vava'u International Airport, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Vava'u International Airport begins around May 4 and lasts for 5.4 months, ending around October 15.

The clearest month of the year at Vava'u International Airport is August, during which on average the sky is clear, mostly clear, or partly cloudy 56% of the time.

The cloudier part of the year begins around October 15 and lasts for 6.6 months, ending around May 4.

The cloudiest month of the year at Vava'u International Airport is January, during which on average the sky is overcast or mostly cloudy 79% of the time.

Cloud Cover Categories at Vava'u International Airport

Cloud Cover Categories at Vava'u International AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2558%Jul 2558%Jan 620%Jan 620%May 439%May 439%Oct 1539%Oct 1539%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 79%79%76%68%59%52%44%44%51%62%73%76%
Clearer 21%21%24%32%41%48%56%56%49%38%27%24%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Vava'u International Airport varies throughout the year.

The wetter season lasts 5.8 months, from November 13 to May 6, with a greater than 28% chance of a given day being a wet day. The month with the most wet days at Vava'u International Airport is February, with an average of 12.2 days with at least 0.04 inches of precipitation.

The drier season lasts 6.2 months, from May 6 to November 13. The month with the fewest wet days at Vava'u International Airport is July, with an average of 4.7 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone at Vava'u International Airport is February, with an average of 12.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 43% on February 20.

Daily Chance of Precipitation at Vava'u International Airport

Daily Chance of Precipitation at Vava'u International AirportwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 2043%Feb 2043%Jul 514%Jul 514%Nov 1328%Nov 1328%May 628%May 628%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 12.2d12.2d12.7d10.7d8.5d6.0d4.7d5.2d6.6d8.3d9.2d11.3d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Vava'u International Airport experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year at Vava'u International Airport. The month with the most rain at Vava'u International Airport is February, with an average rainfall of 6.4 inches.

The month with the least rain at Vava'u International Airport is July, with an average rainfall of 1.6 inches.

Average Monthly Rainfall at Vava'u International Airport

Average Monthly Rainfall at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inMar 36.6 inMar 36.6 inJul 101.6 inJul 101.6 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 6.1″6.4″6.3″5.7″3.6″2.6″1.6″2.0″2.7″3.3″3.9″4.8″

The length of the day at Vava'u International Airport varies over the course of the year. In 2024, the shortest day is June 21, with 11 hours, 1 minute of daylight; the longest day is December 21, with 13 hours, 15 minutes of daylight.

Hours of Daylight and Twilight at Vava'u International Airport

Hours of Daylight and Twilight at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minSep 2312 hr, 7 minSep 2313 hr, 15 minDec 2113 hr, 15 minDec 2112 hr, 6 minMar 2012 hr, 6 minMar 2011 hr, 1 minJun 2111 hr, 1 minJun 21daydaynightNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 13.1h12.7h12.2h11.6h11.2h11.0h11.1h11.5h12.0h12.5h13.0h13.2h

The earliest sunrise is at 5:49 AM on November 24, and the latest sunrise is 1 hour, 19 minutes later at 7:09 AM on July 5. The earliest sunset is at 6:06 PM on June 4, and the latest sunset is 1 hour, 13 minutes later at 7:18 PM on January 17.

Daylight saving time (DST) is not observed at Vava'u International Airport during 2024.

Sunrise & Sunset with Twilight at Vava'u International Airport

Sunrise & Sunset with Twilight at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 245:49 AMNov 245:49 AM7:18 PMJan 177:18 PMJan 17Jun 46:06 PMJun 46:06 PM7:09 AMJul 57:09 AMJul 5daySolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth at Vava'u International Airport

Solar Elevation and Azimuth at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM4890NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases at Vava'u International Airport

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Vava'u International Airport experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 9.9 months, from September 6 to July 1, during which time the comfort level is muggy, oppressive, or miserable at least 76% of the time. The month with the most muggy days at Vava'u International Airport is March, with 31.0 days that are muggy or worse.

The month with the fewest muggy days at Vava'u International Airport is August, with 21.9 days that are muggy or worse.

Humidity Comfort Levels at Vava'u International Airport

Humidity Comfort Levels at Vava'u International AirportmuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 2268%Jul 2268%100%Feb 20100%Feb 20Sep 676%Sep 676%NowNowmiserablemiserableoppressiveoppressivemuggymuggyhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 30.9d29.0d31.0d29.8d29.3d25.5d22.0d21.9d24.6d28.4d29.2d30.8d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Vava'u International Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.3 months, from April 12 to November 20, with average wind speeds of more than 13.9 miles per hour. The windiest month of the year at Vava'u International Airport is August, with an average hourly wind speed of 15.1 miles per hour.

The calmer time of year lasts for 4.7 months, from November 20 to April 12. The calmest month of the year at Vava'u International Airport is March, with an average hourly wind speed of 12.8 miles per hour.

Average Wind Speed at Vava'u International Airport

Average Wind Speed at Vava'u International AirportwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mph22 mph22 mphAug 915.3 mphAug 915.3 mphMar 712.6 mphMar 712.6 mphNov 2013.9 mphNov 2013.9 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 13.312.912.814.014.714.714.915.115.114.914.113.9

The predominant average hourly wind direction at Vava'u International Airport is from the east throughout the year.

Wind Direction at Vava'u International Airport

Wind Direction at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNoweastnorthsouthwest
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Vava'u International Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.5 months, from January 7 to April 22, with an average temperature above 82°F. The month of the year at Vava'u International Airport with the warmest water is March, with an average temperature of 83°F.

The time of year with cooler water lasts for 3.3 months, from July 2 to October 11, with an average temperature below 78°F. The month of the year at Vava'u International Airport with the coolest water is August, with an average temperature of 77°F.

Average Water Temperature at Vava'u International Airport

Average Water Temperature at Vava'u International AirportwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec74°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°FFeb 2383°FFeb 2383°F77°FAug 1277°FAug 12Jan 782°FJan 782°FApr 2282°FApr 2282°FJul 278°FJul 278°FOct 1178°FOct 1178°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 82°F83°F83°F82°F80°F79°F78°F77°F78°F78°F80°F81°F

To characterize how pleasant the weather is at Vava'u International Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Vava'u International Airport for general outdoor tourist activities is from mid June to late September, with a peak score in the last week of July.

Tourism Score at Vava'u International Airport

Tourism Score at Vava'u International Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.67.63.83.8NowNow cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Vava'u International Airport for hot-weather activities is from late April to late October, with a peak score in the first week of August.

Beach/Pool Score at Vava'u International Airport

Beach/Pool Score at Vava'u International Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.66.64.94.9NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures at Vava'u International Airport are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season at Vava'u International Airport

Time Spent in Various Temperature Bands and the Growing Season at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 2100%Jul 2NowNowcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Growing Degree Days at Vava'u International Airport

Growing Degree Days at Vava'u International AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FJul 590°FJul 590°FAug 7900°FAug 7900°FSep 121,800°FSep 121,800°FJun 3010,152°FJun 3010,152°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 4.5 months, from October 2 to February 17, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year at Vava'u International Airport is December, with an average of 6.2 kWh.

The darker period of the year lasts for 2.5 months, from May 9 to July 26, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest month of the year at Vava'u International Airport is June, with an average of 3.9 kWh.

Average Daily Incident Shortwave Solar Energy at Vava'u International Airport

Average Daily Incident Shortwave Solar Energy at Vava'u International AirportbrightbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhDec 286.2 kWhDec 286.2 kWhJun 103.8 kWhJun 103.8 kWhOct 25.7 kWhOct 25.7 kWhFeb 175.7 kWhFeb 175.7 kWhJul 264.3 kWhJul 264.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 6.15.75.34.74.23.94.24.75.45.96.16.2

This report illustrates the typical weather at Vava'u International Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Vava'u International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.