1. WeatherSpark.com
  2. Vanuatu
  3. Shefa

Average Weather in Port-Vila Vanuatu

In Port-Vila, the summers are hot, oppressive, wet, and overcast; the winters are short, comfortable, muggy, and partly cloudy; and it is windy year round. Over the course of the year, the temperature typically varies from 65°F to 86°F and is rarely below 58°F or above 89°F.

Based on the tourism score, the best time of year to visit Port-Vila for warm-weather activities is from late June to late October.

Climate Summary

hotwarmhotJanFebMarAprMayJunJulAugSepOctNovDecNowNow59%59%20%20%overcastclearprecipitation: 8.9 inprecipitation: 8.9 in1.5 in1.5 inmuggy: 100%muggy: 100%54%54%tourism score: 7.4tourism score: 7.44.34.3
Click on each chart for more information.

Temperature

The hot season lasts for 3.8 months, from December 9 to April 3, with an average daily high temperature above 85°F. The hottest day of the year is February 4, with an average high of 86°F and low of 74°F.

The cool season lasts for 2.9 months, from June 14 to September 11, with an average daily high temperature below 80°F. The coldest day of the year is August 25, with an average low of 65°F and high of 78°F.

Average High and Low Temperature

Average High and Low Temperature in Port-VilahothotcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FAug 2578°FAug 2578°FFeb 486°FFeb 486°F65°F65°F74°F74°FDec 985°FDec 985°FApr 385°FApr 385°FJun 1480°FJun 1480°F72°F72°F74°F74°F68°F68°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.

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

Average Hourly Temperature in Port-VilaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcomfortablecomfortablewarmcomfortable
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.

Waimea, Hawaii, United States (3,498 miles away) and Rio de Janeiro, Brazil (8,923 miles) are the far-away foreign places with temperatures most similar to Port-Vila (view comparison).

Clouds

In Port-Vila, 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 in Port-Vila begins around May 20 and lasts for 5.7 months, ending around November 12. On August 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 59% of the time, and overcast or mostly cloudy 41% of the time.

The cloudier part of the year begins around November 12 and lasts for 6.3 months, ending around May 20. On March 1, the cloudiest day of the year, the sky is overcast or mostly cloudy 80% of the time, and clear, mostly clear, or partly cloudy 20% of the time.

Cloud Cover Categories

Cloud Cover Categories in Port-VilaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2959%Aug 2959%Mar 120%Mar 120%May 2040%May 2040%Nov 1240%Nov 1240%NowNowclearmostly clearpartly 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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Port-Vila varies significantly throughout the year.

The wetter season lasts 5.1 months, from November 25 to April 29, with a greater than 34% chance of a given day being a wet day. The chance of a wet day peaks at 53% on March 7.

The drier season lasts 6.9 months, from April 29 to November 25. The smallest chance of a wet day is 16% on August 25.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 53% on March 7.

Daily Chance of Precipitation

Daily Chance of Precipitation in Port-VilawetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 753%Mar 753%Aug 2516%Aug 2516%Jan 143%Jan 143%Apr 2934%Apr 2934%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).

Rainfall

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. Port-Vila experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Port-Vila. The most rain falls during the 31 days centered around March 11, with an average total accumulation of 8.9 inches.

The least rain falls around August 31, with an average total accumulation of 1.5 inches.

Average Monthly Rainfall

Average Monthly Rainfall in Port-VilaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 inMar 118.9 inMar 118.9 inAug 311.5 inAug 311.5 in
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 liquid-equivalent snowfall.

Sun

The length of the day in Port-Vila varies over the course of the year. In 2021, the shortest day is June 21, with 11 hours, 4 minutes of daylight; the longest day is December 22, with 13 hours, 12 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in Port-VilaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minSep 2312 hr, 6 minSep 2313 hr, 12 minDec 2213 hr, 12 minDec 2212 hr, 7 minMar 2012 hr, 7 minMar 2011 hr, 4 minJun 2111 hr, 4 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.

The earliest sunrise is at 5:01 AM on November 25, and the latest sunrise is 1 hour, 16 minutes later at 6:18 AM on July 7. The earliest sunset is at 5:18 PM on June 3, and the latest sunset is 1 hour, 10 minutes later at 6:28 PM on January 19.

Daylight saving time (DST) is not observed in Port-Vila during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in Port-VilaJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 255:01 AMNov 255:01 AM6:28 PMJan 196:28 PMJan 19Jun 35:18 PMJun 35:18 PM6:18 AMJul 76:18 AMJul 7daySolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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

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.

Humidity

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.

Port-Vila experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 9.5 months, from September 23 to July 8, during which time the comfort level is muggy, oppressive, or miserable at least 65% of the time. The muggiest day of the year is March 20, with muggy conditions 100% of the time.

The least muggy day of the year is August 26, with muggy conditions 54% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in Port-VilamuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 2654%Aug 2654%100%Mar 20100%Mar 20Jul 865%Jul 865%NowNowmiserablemiserableoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortable
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.

Wind

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 in Port-Vila experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.1 months, from April 12 to November 16, with average wind speeds of more than 14.0 miles per hour. The windiest day of the year is August 8, with an average hourly wind speed of 15.8 miles per hour.

The calmer time of year lasts for 4.9 months, from November 16 to April 12. The calmest day of the year is February 5, with an average hourly wind speed of 12.2 miles per hour.

Average Wind Speed

Average Wind Speed in Port-VilawindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mph22 mph22 mphAug 815.8 mphAug 815.8 mphFeb 512.2 mphFeb 512.2 mphApr 1214.0 mphApr 1214.0 mphNov 1614.0 mphNov 1614.0 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Port-Vila is from the east throughout the year.

Wind Direction

Wind Direction in Port-VilaJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNoweastsouthnorthwest
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).

Water Temperature

Port-Vila 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 December 30 to April 14, with an average temperature above 82°F. The day of the year with the warmest water is February 16, with an average temperature of 84°F.

The time of year with cooler water lasts for 3.6 months, from June 30 to October 19, with an average temperature below 79°F. The day of the year with the coolest water is August 16, with an average temperature of 78°F.

Average Water Temperature

Average Water Temperature in Port-VilawarmcoolJanFebMarAprMayJunJulAugSepOctNovDec76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°FFeb 1684°FFeb 1684°F78°FAug 1678°FAug 16Dec 3082°FDec 3082°FApr 1482°FApr 1482°FJun 3079°FJun 3079°FOct 1979°FOct 1979°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Port-Vila 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 Port-Vila for general outdoor tourist activities is from late June to late October, with a peak score in the last week of August.

Tourism Score

Tourism Score in Port-Vilabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.47.44.34.3NowNowcloudscloudstemperaturetemperature tourism 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 times of year to visit Port-Vila for hot-weather activities are from late March to early June and from mid October to mid January, with a peak score in the last week of April.

Beach/Pool Score

Beach/Pool Score in Port-Vilabest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.65.64.34.35.55.54.74.7NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/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.

Growing Season

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 in Port-Vila 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

Time Spent in Various Temperature Bands and the Growing Season in Port-VilaJanFebMarAprMayJunJulAugSepOctNovDec0%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 3100%Jul 3NowNowcoolcomfortablewarmhot
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

Growing Degree Days in Port-VilaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°F7,000°F7,000°F8,000°F8,000°F9,000°F9,000°FJul 590°FJul 590°FAug 12900°FAug 12900°FSep 211,800°FSep 211,800°FJun 309,396°FJun 309,396°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.7 months, from September 28 to January 19, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest day of the year is December 22, with an average of 6.7 kWh.

The darker period of the year lasts for 2.6 months, from May 8 to July 27, with an average daily incident shortwave energy per square meter below 4.5 kWh. The darkest day of the year is June 16, with an average of 3.9 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in Port-VilabrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhDec 226.7 kWhDec 226.7 kWhJun 163.9 kWhJun 163.9 kWhSep 286.2 kWhSep 286.2 kWhJan 196.2 kWhJan 196.2 kWhMay 84.5 kWhMay 84.5 kWhJul 274.5 kWhJul 274.5 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.

Topography

For the purposes of this report, the geographical coordinates of Port-Vila are -17.734 deg latitude, 168.322 deg longitude, and 194 ft elevation.

The topography within 2 miles of Port-Vila contains only modest variations in elevation, with a maximum elevation change of 476 feet and an average elevation above sea level of 114 feet. Within 10 miles contains only modest variations in elevation (2,116 feet). Within 50 miles also contains large variations in elevation (2,119 feet).

The area within 2 miles of Port-Vila is covered by trees (31%), water (27%), cropland (21%), and grassland (11%), within 10 miles by water (41%) and trees (41%), and within 50 miles by water (96%).

Data Sources

This report illustrates the typical weather in Port-Vila, 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

There is only a single weather station, Port Vila - Bauerfield International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Port-Vila.

At a distance of 4 kilometers from Port-Vila, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Port-Vila according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.