Shefa

Port-Vila, Vanuatu Climate

NASA POWER reanalysis for the half-degree grid cell around Port-Vila, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

The warmest month is February, with an average high of 28°C; the coldest is August, with an average low of 24°C. A normal year brings 1673 mm of precipitation.

Temperature through the year

The normal daily high and low. The line marks today.

Normal daily high and low temperature at Port-Vila through the year, in °C, with the record for each date.17.52022.52527.53032.5JanFebMarAprMayJunJulAugSepOctNovDec
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

Normals for Sep 25

Normal high
25°C
Normal low
24°C
Reanalysis high
27°Cin 2010
Reanalysis low
22°Cin 1994
Chance of a wet day
35%
Daylight
12 h 09 min

Month by month

Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.

MonthAvg highAvg lowWarmestColdestPrecipitationWet days
January28°C27°C30°C (2002)25°C (1992)217 mm21.7
February28°C27°C31°C (2016)24°C (1993)186 mm19.8
March28°C27°C30°C (2015)25°C (2015)254 mm24.8
April28°C27°C29°C (2006)24°C (1993)207 mm21.0
May27°C26°C29°C (2003)23°C (1993)133 mm15.5
June26°C25°C28°C (2010)22°C (1993)111 mm15.0
July25°C24°C27°C (2013)21°C (2000)84 mm12.4
August25°C24°C27°C (2020)19°C (2006)65 mm12.4
September25°C24°C28°C (2000)21°C (2003)69 mm12.0
October26°C25°C28°C (2013)22°C (1992)90 mm15.5
November26°C25°C29°C (2000)23°C (1991)114 mm15.0
December27°C26°C29°C (1998)24°C (1994)143 mm18.6
Year26°C25°C1673 mm204

Precipitation

Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.

1673 mm in a normal year, most in March.

Chance of a wet day

The chance of at least 1 mm of precipitation in the reanalysis on each date at Port-Vila, in percent.020406080100JanFebMarAprMayJunJulAugSepOctNovDec
  • Chance of a wet day

Humidity and comfort

NASA POWER reanalysis, 1991-2020, for the grid cell around Port-Vila.

The muggiest month is April, when 101 percent of days are muggy or worse, with a mean dew point of 18°C or more.

MonthDew pointHumidityDryComfortableHumidMuggyOppressiveMiserable
January24°C81%0%0%0%5%43%52%
February24°C81%0%0%0%2%30%67%
March24°C82%0%0%0%0%28%72%
April24°C81%0%0%0%4%51%46%
May22°C79%0%0%0%25%60%15%
June21°C80%0%0%4%37%53%6%
July20°C78%0%0%15%53%31%1%
August20°C78%0%1%21%47%30%1%
September20°C78%0%0%15%48%36%1%
October21°C79%0%0%6%40%51%2%
November22°C80%0%0%1%24%66%10%
December23°C80%0%0%0%9%59%31%

Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.

Clouds

Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.

The clearest month is December, with the sky 59 percent covered on average; the cloudiest is June, at 69 percent.

Wind

The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.

The windiest month is June, averaging 25.9 km/h at 10 meters (33 feet) above the ground.

Daylight and sunshine

The longest day is Dec 15, with 13 h 12 min of daylight; the shortest is Jun 14, with 11 h 04 min.

Hours of daylight at Port-Vila through the year.0510152025JanFebMarAprMayJunJulAugSepOctNovDec
  • Day length

Solar energy

Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.

Sunrise and sunset calendar

Month pages

The weather in Port-Vila in each month, day by day.

What this means

A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.

Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.

Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.

More for this place

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.