Climate and Average Weather Year Round in Vanuatu Vanuatu
In Vanuatu, 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 Vanuatu for warm-weather activities is from late June to late October.
Climate in Vanuatu
The hot season lasts for 3.8 months, from December 9 to April 3, with an average daily high temperature above 84°F. The hottest month of the year in Vanuatu is February, 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 79°F. The coldest month of the year in Vanuatu is August, with an average low of 66°F and high of 78°F.
Average High and Low Temperature in Vanuatu
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 in Vanuatu
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
In Vanuatu, 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 Vanuatu begins around May 20 and lasts for 5.7 months, ending around November 12.
The clearest month of the year in Vanuatu is August, during which on average the sky is clear, mostly clear, or partly cloudy 58% of the time.
The cloudier part of the year begins around November 12 and lasts for 6.3 months, ending around May 20.
The cloudiest month of the year in Vanuatu is February, during which on average the sky is overcast or mostly cloudy 78% of the time.
Cloud Cover Categories in Vanuatu
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Vanuatu varies significantly throughout the year.
The wetter season lasts 5.2 months, from November 22 to April 29, with a greater than 34% chance of a given day being a wet day. The month with the most wet days in Vanuatu is March, with an average of 16.2 days with at least 0.04 inches of precipitation.
The drier season lasts 6.8 months, from April 29 to November 22. The month with the fewest wet days in Vanuatu is August, with an average of 5.4 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 in Vanuatu is March, with an average of 16.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 54% on March 7.
Daily Chance of Precipitation in Vanuatu
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. Vanuatu experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Vanuatu. The month with the most rain in Vanuatu is March, with an average rainfall of 8.8 inches.
The month with the least rain in Vanuatu is August, with an average rainfall of 1.7 inches.
Average Monthly Rainfall in Vanuatu
The length of the day in Vanuatu varies over the course of the year. In 2021, the shortest day is June 21, with 11 hours, 11 minutes of daylight; the longest day is December 22, with 13 hours, 5 minutes of daylight.
Hours of Daylight and Twilight in Vanuatu
The earliest sunrise is at 5:10 AM on November 23, and the latest sunrise is 1 hour, 10 minutes later at 6:20 AM on July 8. The earliest sunset is at 5:26 PM on June 2, and the latest sunset is 1 hour, 4 minutes later at 6:30 PM on January 20.
Daylight saving time (DST) is not observed in Vanuatu during 2021.
Sunrise & Sunset with Twilight in Vanuatu
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 in Vanuatu
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.
Vanuatu 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 month with the most muggy days in Vanuatu is March, with 30.9 days that are muggy or worse.
The month with the fewest muggy days in Vanuatu is August, with 17.5 days that are muggy or worse.
Humidity Comfort Levels in Vanuatu
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Vanuatu experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 7.1 months, from April 13 to November 16, with average wind speeds of more than 14.0 miles per hour. The windiest month of the year in Vanuatu is August, with an average hourly wind speed of 15.6 miles per hour.
The calmer time of year lasts for 4.9 months, from November 16 to April 13. The calmest month of the year in Vanuatu is February, with an average hourly wind speed of 12.6 miles per hour.
Average Wind Speed in Vanuatu
The predominant average hourly wind direction in Vanuatu is from the east throughout the year.
Wind Direction in Vanuatu
Vanuatu 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 month of the year in Vanuatu with the warmest water is February, 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 month of the year in Vanuatu with the coolest water is August, with an average temperature of 78°F.
Average Water Temperature in Vanuatu
To characterize how pleasant the weather is in Vanuatu 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 Vanuatu for general outdoor tourist activities is from late June to late October, with a peak score in the last week of August.
Tourism Score in Vanuatu
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 Vanuatu for hot-weather activities are from late March to late May and from mid October to mid January, with a peak score in the last week of April.
Beach/Pool Score in Vanuatu
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 in Vanuatu 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 in Vanuatu
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
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 in Vanuatu
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 27 to January 19, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest month of the year in Vanuatu is December, 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 month of the year in Vanuatu is June, with an average of 4.0 kWh.
Average Daily Incident Shortwave Solar Energy in Vanuatu
For the purposes of this report, the geographical coordinates of Vanuatu are -16.000 deg latitude, 167.000 deg longitude, and 0 ft elevation.
The topography within 2 miles of Vanuatu is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).
The area within 2 miles of Vanuatu is covered by water (100%), within 10 miles by water (100%), and within 50 miles by water (83%) and trees (13%).
This report illustrates the typical weather in Vanuatu, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
The details of the data sources used for this report can be found on the Port Vila - Bauerfield International Airport page.
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.