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Average Weather in Mata-Utu Wallis & Futuna

The climate in Mata-Utu is hot, oppressive, windy, and overcast. Over the course of the year, the temperature typically varies from 77°F to 87°F and is rarely below 75°F or above 89°F.

Based on the beach/pool score, the best time of year to visit Mata-Utu for hot-weather activities is from mid June to late September.

Climate Summary

hotwarmhotJanFebMarAprMayJunJulAugSepOctNovDec52%52%10%10%overcastclearprecipitation: 10.0 inprecipitation: 10.0 in2.2 in2.2 inmuggy: 100%muggy: 100%98%98%beach/pool score: 7.1beach/pool score: 7.13.83.8
Click on each chart for more information.

Temperature

The temperature in Mata-Utu varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature

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 Mata-UtuJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMwarmhothot
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Fortaleza, Brazil (9,313 miles away) and Fernando de Noronha (Distrito Estadual), Brazil (9,695 miles) are the far-away foreign places with temperatures most similar to Mata-Utu (view comparison).

Clouds

In Mata-Utu, 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 Mata-Utu begins around May 8 and lasts for 5.2 months, ending around October 13. On August 26, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 52% of the time, and overcast or mostly cloudy 48% of the time.

The cloudier part of the year begins around October 13 and lasts for 6.8 months, ending around May 8. On January 2, the cloudiest day of the year, the sky is overcast or mostly cloudy 90% of the time, and clear, mostly clear, or partly cloudy 10% of the time.

Cloud Cover Categories

Cloud Cover Categories in Mata-UtuclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2652%Aug 2652%Jan 210%Jan 210%May 831%May 831%Oct 1331%Oct 1331%clearmostly clearpartly cloudymostly cloudyovercast
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 8.2 months, from September 30 to June 5, with a greater than 41% chance of a given day being a wet day. The chance of a wet day peaks at 58% on January 6.

The drier season lasts 3.8 months, from June 5 to September 30. The smallest chance of a wet day is 23% on August 17.

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 58% on January 6.

Daily Chance of Precipitation

Daily Chance of Precipitation in Mata-UtuwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 658%Jan 658%Aug 1723%Aug 1723%Jan 156%Jan 156%Sep 3041%Sep 3041%Jun 541%Jun 541%rain
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. Mata-Utu experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Mata-Utu. The most rain falls during the 31 days centered around January 26, with an average total accumulation of 10.0 inches.

The least rain falls around August 14, with an average total accumulation of 2.2 inches.

Average Monthly Rainfall

Average Monthly Rainfall in Mata-UtuJanFebMarAprMayJunJulAugSepOctNovDec0 in5 in10 in15 in20 inJan 2610.0 inJan 2610.0 inAug 142.2 inAug 142.2 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 Mata-Utu varies over the course of the year. In 2018, the shortest day is June 21, with 11 hours, 21 minutes of daylight; the longest day is December 22, with 12 hours, 55 minutes of daylight.

Hours of Daylight and Twilight

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 5:07 AM on November 20, and the latest sunrise is 1 hour, 1 minute later at 6:08 AM on July 9. The earliest sunset is at 5:24 PM on June 1, and the latest sunset is 55 minutes later at 6:19 PM on January 22.

Daylight saving time (DST) is not observed in Mata-Utu during 2018.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in Mata-UtuJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMNov 205:07 AMNov 205:07 AM6:19 PMJan 226:19 PMJan 22Jun 15:24 PMJun 15:24 PM6:08 AMJul 96:08 AMJul 9daySolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. 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.

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.

The perceived humidity level in Mata-Utu, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 1% of 99% throughout.

Humidity Comfort Levels

Humidity Comfort Levels in Mata-UtuJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 1998%Jul 1998%100%Feb 8100%Feb 8miserablemiserableoppressiveoppressivemuggymuggy
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

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 Mata-Utu experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.1 months, from May 20 to October 22, with average wind speeds of more than 13.1 miles per hour. The windiest day of the year is July 29, with an average hourly wind speed of 15.6 miles per hour.

The calmer time of year lasts for 6.9 months, from October 22 to May 20. The calmest day of the year is March 25, with an average hourly wind speed of 10.7 miles per hour.

Average Wind Speed

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 Mata-Utu is from the east throughout the year.

Wind Direction

Wind Direction in Mata-UtuJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%eastnorthwestsouth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 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

Mata-Utu 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 does not vary significantly over the course of the year, remaining within 1°F of 83°F throughout.

Average Water Temperature

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 Mata-Utu 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 Mata-Utu for general outdoor tourist activities is from late June to mid September, with a peak score in the last week of August.

Tourism Score

Tourism Score in Mata-Utubest timeJanFebMarAprMayJunJulAugSepOctNovDec02468105.85.82.62.6 precipitationprecipitationtemperaturetemperaturetourism 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 Mata-Utu for hot-weather activities is from mid June to late September, with a peak score in the last week of August.

Beach/Pool Score

Beach/Pool Score in Mata-Utubest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.17.13.83.8 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/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 Mata-Utu 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 Mata-UtuJanFebMarAprMayJunJulAugSepOctNovDec0%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 3warmhotcomfortable
The percentage of time spent in various temperature bands: 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 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 Mata-UtuJanFebMarAprMayJunJulAugSepOctNovDec0°F2,000°F4,000°F6,000°F8,000°F10,000°FJul 490°FJul 490°FAug 301,800°FAug 301,800°FJun 3011,347°FJun 3011,347°F
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 2.3 months, from August 26 to November 5, with an average daily incident shortwave energy per square meter above 5.4 kWh. The brightest day of the year is September 18, with an average of 5.7 kWh.

The darker period of the year lasts for 3.0 months, from April 9 to July 9, with an average daily incident shortwave energy per square meter below 4.5 kWh. The darkest day of the year is May 29, with an average of 4.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in Mata-UtubrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhSep 185.7 kWhSep 185.7 kWhMay 294.2 kWhMay 294.2 kWhNov 55.4 kWhNov 55.4 kWhApr 94.5 kWhApr 94.5 kWhJul 94.5 kWhJul 94.5 kWh
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 Mata-Utu are -13.282 deg latitude, -176.175 deg longitude, and 0 ft elevation.

The topography within 2 miles of Mata-Utu contains only modest variations in elevation, with a maximum elevation change of 472 feet and an average elevation above sea level of 98 feet. Within 10 miles also contains only modest variations in elevation (486 feet). Within 50 miles also contains only modest variations in elevation (486 feet).

The area within 2 miles of Mata-Utu is covered by water (100%), within 10 miles by water (99%), and within 50 miles by water (100%).

Data Sources

This report illustrates the typical weather in Mata-Utu, 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, Hihifo Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Mata-Utu.

At a distance of 6 kilometers from Mata-Utu, 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 Mata-Utu 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 Tables of the Sun, Moon and Planets , 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 aiports 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.