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Climate and Average Weather Year Round in Palau Palau

The climate in Palau 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 Palau for hot-weather activities is from mid January to late April.

Climate in Palau

hotJanFebMarAprMayJunJulAugSepOctNovDecNowNow27%27%10%10%overcastprecipitation: 14.5 inprecipitation: 14.5 in5.4 in5.4 inmuggy: 100%muggy: 100%beach/pool score: 5.5beach/pool score: 5.53.43.4
Palau weather by month. Click on each chart for more information.

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

Average High and Low Temperature in Palau

Average High and Low Temperature in PalauJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJul 486°FJul 486°FMay 2587°FMay 2587°F77°F77°F77°F77°FApr 787°FApr 787°FDec 2585°FDec 2585°FMar 385°FMar 385°F78°F78°F78°F78°F77°F77°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
High85°F85°F86°F87°F87°F86°F86°F86°F86°F87°F87°F86°F
Temp.80°F80°F81°F82°F81°F81°F81°F81°F82°F82°F81°F81°F
Low77°F77°F77°F77°F77°F77°F77°F78°F78°F78°F78°F78°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 in Palau

Average Hourly Temperature in PalauJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowwarmhothot
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.
Map
Marker
© Esri, et al.

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In Palau, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year in Palau begins around December 22 and lasts for 4.1 months, ending around April 27.

The clearest month of the year in Palau is February, during which on average the sky is clear, mostly clear, or partly cloudy 26% of the time.

The cloudier part of the year begins around April 27 and lasts for 7.9 months, ending around December 22.

The cloudiest month of the year in Palau is June, during which on average the sky is overcast or mostly cloudy 90% of the time.

Cloud Cover Categories in Palau

Cloud Cover Categories in PalauclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Mar 527%Mar 527%Jun 1210%Jun 1210%Dec 2218%Dec 2218%Apr 2719%Apr 2719%NowNowmostly 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
Cloudier78%74%74%78%87%90%89%89%88%89%87%83%
Clearer22%26%26%22%13%10%11%11%12%11%13%17%

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

The wetter season lasts 4.9 months, from May 16 to October 13, with a greater than 62% chance of a given day being a wet day. The month with the most wet days in Palau is June, with an average of 23.2 days with at least 0.04 inches of precipitation.

The drier season lasts 7.1 months, from October 13 to May 16. The month with the fewest wet days in Palau is March, with an average of 14.1 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 Palau is June, with an average of 23.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 81% on June 25.

Daily Chance of Precipitation in Palau

Daily Chance of Precipitation in PalauwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 2581%Jun 2581%Mar 3144%Mar 3144%Jan 155%Jan 155%May 1662%May 1662%Oct 1362%Oct 1362%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
Rain16.8d14.0d14.1d14.7d19.2d23.2d23.7d21.2d19.3d18.8d17.7d17.9d

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. Palau experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Palau. The month with the most rain in Palau is July, with an average rainfall of 14.0 inches.

The month with the least rain in Palau is March, with an average rainfall of 5.7 inches.

Average Monthly Rainfall in Palau

Average Monthly Rainfall in PalauJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 in20 in20 in25 in25 inJun 3014.5 inJun 3014.5 inMar 315.4 inMar 315.4 inSep 2510.0 inSep 2510.0 inDec 287.7 inDec 287.7 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
Rainfall7.3″6.9″5.7″5.8″8.2″13.0″14.0″11.3″9.8″9.3″7.9″7.5″

The length of the day in Palau does not vary substantially over the course of the year, staying within 33 minutes of 12 hours throughout. In 2021, the shortest day is December 22, with 11 hours, 41 minutes of daylight; the longest day is June 21, with 12 hours, 34 minutes of daylight.

Hours of Daylight and Twilight in Palau

Hours of Daylight and Twilight in PalauJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2012 hr, 34 minJun 2112 hr, 34 minJun 2112 hr, 7 minSep 2312 hr, 7 minSep 2311 hr, 41 minDec 2211 hr, 41 minDec 22nightnightdayNowNow
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
Daylight11.7h11.9h12.1h12.3h12.5h12.6h12.5h12.4h12.2h11.9h11.8h11.7h

The earliest sunrise is at 5:43 AM on May 27, and the latest sunrise is 38 minutes later at 6:20 AM on January 31. The earliest sunset is at 5:39 PM on November 13, and the latest sunset is 44 minutes later at 6:23 PM on July 15.

Daylight saving time (DST) is not observed in Palau during 2021.

Sunrise & Sunset with Twilight in Palau

Sunrise & Sunset with Twilight in PalauJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMay 275:43 AMMay 275:43 AM6:23 PMJul 156:23 PMJul 15Nov 135:39 PMNov 135:39 PM6:20 AMJan 316:20 AMJan 31daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
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.

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 Palau

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.

The perceived humidity level in Palau, 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, remaining a virtually constant 100% throughout.

Humidity Comfort Levels in Palau

Humidity Comfort Levels in PalauJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 3100%Jul 3100%NowNowmiserablemiserableoppressiveoppressive
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 days31.0d28.0d31.0d30.0d31.0d30.0d31.0d31.0d30.0d31.0d30.0d31.0d

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 Palau experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.3 months, from December 8 to April 17, with average wind speeds of more than 11.5 miles per hour. The windiest month of the year in Palau is February, with an average hourly wind speed of 14.5 miles per hour.

The calmer time of year lasts for 7.7 months, from April 17 to December 8. The calmest month of the year in Palau is June, with an average hourly wind speed of 9.0 miles per hour.

Average Wind Speed in Palau

Average Wind Speed in PalauwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphFeb 1214.7 mphFeb 1214.7 mphMay 308.2 mphMay 308.2 mphDec 811.5 mphDec 811.5 mphApr 1711.5 mphApr 1711.5 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)14.214.513.711.59.19.010.210.910.39.79.912.3

The predominant average hourly wind direction in Palau varies throughout the year.

The wind is most often from the west for 4.0 months, from June 26 to October 25, with a peak percentage of 54% on August 9. The wind is most often from the east for 8.0 months, from October 25 to June 26, with a peak percentage of 76% on January 1.

Wind Direction in Palau

Wind Direction in PalauEWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastsouthnorth
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).

Palau 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 84°F throughout.

Average Water Temperature in Palau

Average Water Temperature in PalauJanFebMarAprMayJunJulAugSepOctNovDec80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°FMay 3185°FMay 3185°F82°FFeb 1882°FFeb 18Jul 184°FJul 184°FJan 1883°FJan 1883°FMar 2383°FMar 2383°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature83°F82°F83°F84°F85°F85°F84°F84°F84°F84°F85°F84°F

To characterize how pleasant the weather is in Palau 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 Palau for general outdoor tourist activities is from mid January to mid April, with a peak score in the first week of March.

Tourism Score in Palau

Tourism Score in Palaubest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.54.52.62.6NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 time of year to visit Palau for hot-weather activities is from mid January to late April, with a peak score in the third week of March.

Beach/Pool Score in Palau

Beach/Pool Score in Palaubest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.55.53.43.44.44.4NowNowprecipitationprecipitationtemperaturetemperaturebeach/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 in Palau 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 Palau

Time Spent in Various Temperature Bands and the Growing Season in PalauJanFebMarAprMayJunJulAugSepOctNovDec0%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 3NowNowwarmhot
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 in Palau

Growing Degree Days in PalauJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FJan 390°FJan 390°FJan 30900°FJan 30900°FDec 3111,304°FDec 3111,304°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 2.1 months, from February 20 to April 23, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest month of the year in Palau is March, with an average of 5.9 kWh.

The darker period of the year lasts for 2.9 months, from May 27 to August 23, with an average daily incident shortwave energy per square meter below 4.2 kWh. The darkest month of the year in Palau is June, with an average of 3.9 kWh.

Average Daily Incident Shortwave Solar Energy in Palau

Average Daily Incident Shortwave Solar Energy in PalaubrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhMar 195.9 kWhMar 195.9 kWhJun 253.8 kWhJun 253.8 kWhAug 234.2 kWhAug 234.2 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)4.85.45.95.74.53.94.04.24.34.14.04.3

For the purposes of this report, the geographical coordinates of Palau are 7.503 deg latitude, 134.621 deg longitude, and 0 ft elevation.

The topography within 2 miles of Palau 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 Palau is covered by water (51%) and trees (29%), within 10 miles by water (66%) and trees (25%), and within 50 miles by water (98%).

This report illustrates the typical weather in Palau, 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 Roman Tmetuchl International Airport page.

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.

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