Compare the Climate and Weather in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa Airport

This page lets you compare and contrast the weather and climate in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa Airport year round.

You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.

You can compare up to 6 locations. Add more locations using the search box below or by clicking the map.

Average High and Low Temperature

Compare the Average High and Low Temperature in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F105°F105°F78719388807490867873867693831029486103948293887810689NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportBatticaloa AirportBatticaloa Airport
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 89°F91°F93°F92°F90°F88°F88°F88°F88°F88°F88°F88°F
Ratmalana Airport 88°F89°F90°F90°F89°F87°F86°F86°F87°F87°F87°F87°F
Weerawila International Airport 86°F88°F90°F90°F89°F89°F89°F88°F88°F87°F86°F86°F
Batticaloa Airport 83°F85°F87°F90°F92°F93°F92°F91°F90°F87°F85°F83°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 71°F72°F74°F76°F78°F78°F77°F77°F76°F75°F73°F72°F
Ratmalana Airport 74°F75°F77°F78°F80°F80°F80°F79°F79°F77°F75°F75°F
Weerawila International Airport 73°F74°F75°F77°F78°F78°F77°F77°F77°F76°F75°F74°F
Batticaloa Airport 76°F77°F78°F80°F81°F81°F80°F80°F79°F78°F77°F77°F

Ratnapura

Average Hourly Temperature in RatnapuraJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcomfortablecomfortablewarmwarmhot

Ratmalana Airport

Average Hourly Temperature in Ratmalana AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmwarmhot

Weerawila International Airport

Average Hourly Temperature in Weerawila International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmwarmhotcomfortablecomfortable

Batticaloa Airport

Average Hourly Temperature in Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmhot
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.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%411044NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 35%39%38%22%13%11%11%12%16%17%20%27%
Ratmalana Airport 38%42%40%24%15%13%12%14%19%19%22%30%
Weerawila International Airport 36%40%39%25%16%13%12%15%20%20%21%29%
Batticaloa Airport 37%42%42%28%16%13%12%13%18%21%23%31%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%651970206715NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 7.3d5.9d8.8d13.7d14.1d11.4d9.5d9.3d11.9d17.5d17.9d12.6d
Ratmalana Airport 7.4d5.9d9.5d15.4d16.3d13.4d10.0d9.8d13.0d19.6d18.7d12.7d
Weerawila International Airport 8.2d6.1d7.9d12.9d12.9d9.2d7.5d8.6d11.5d17.3d19.0d14.1d
Batticaloa Airport 8.6d6.2d7.5d11.1d9.2d5.3d5.5d6.4d8.9d16.6d18.6d14.5d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in8.01.99.31.79.31.0NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 2.6″1.9″2.5″4.6″4.9″3.3″2.3″2.5″3.8″6.9″7.6″4.7″
Ratmalana Airport 2.2″1.7″2.7″5.5″6.1″4.0″2.4″2.5″4.3″8.2″8.5″4.5″
Weerawila International Airport 4.0″2.5″2.7″4.7″4.5″2.5″1.8″2.1″3.8″7.0″8.8″6.5″
Batticaloa Airport 5.0″2.8″2.2″3.2″2.7″1.1″1.1″1.2″2.4″6.2″9.2″8.4″

Hours of Daylight

Compare the Hours of Daylight in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr12.511.7NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 11.8h11.9h12.1h12.3h12.4h12.5h12.5h12.3h12.1h12.0h11.8h11.7h
Ratmalana Airport 11.8h11.9h12.1h12.3h12.4h12.5h12.5h12.3h12.2h12.0h11.8h11.7h
Weerawila International Airport 11.8h11.9h12.1h12.3h12.4h12.5h12.4h12.3h12.1h12.0h11.8h11.8h
Batticaloa Airport 11.7h11.9h12.1h12.3h12.5h12.6h12.5h12.4h12.2h11.9h11.8h11.7h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%100879510099NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International Airport
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 27.8d26.0d29.8d29.9d31.0d30.0d31.0d31.0d30.0d31.0d29.7d29.6d
Ratmalana Airport 29.7d27.9d30.8d30.0d31.0d30.0d31.0d31.0d30.0d31.0d29.9d30.5d
Weerawila International Airport 30.2d28.1d30.6d30.0d31.0d29.9d30.8d30.8d29.7d30.8d29.9d30.6d
Batticaloa Airport 30.9d28.8d30.9d30.0d31.0d30.0d31.0d30.9d29.9d31.0d30.0d30.9d

Average Wind Speed

Compare the Average Wind Speed in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph12.84.014.05.615.46.812.86.6NowNowRatnapuraRatnapuraRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 6.65.04.15.510.112.612.512.111.28.26.16.7
Ratmalana Airport 9.67.15.77.411.913.713.313.012.49.78.49.6
Weerawila International Airport 11.09.77.67.812.915.215.115.114.310.78.19.7
Batticaloa Airport 11.29.57.76.79.012.412.611.39.37.58.510.9

Average Water Temperature

Compare the Average Water Temperature in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°F858185818681NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 82°F83°F84°F85°F84°F82°F81°F81°F82°F83°F83°F82°F
Ratmalana Airport 82°F83°F84°F85°F84°F83°F81°F81°F82°F83°F83°F83°F
Weerawila International Airport 82°F82°F84°F85°F84°F83°F82°F82°F82°F83°F83°F82°F
Batticaloa Airport 81°F82°F84°F86°F86°F85°F85°F84°F84°F84°F83°F81°F

Tourism Score

Compare the Tourism Score in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.12.74.51.92.0NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.24.43.44.4NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana Airport
The percentage chance that a given day is within the growing season, defined 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).

Growing Degree Days

Compare the Growing Degree Days in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°F12,000°F12,000°FNowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa AirportJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.44.34.3NowNowRatnapuraRatnapuraWeerawila International AirportWeerawila International AirportRatmalana AirportRatmalana AirportBatticaloa AirportBatticaloa Airport
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Ratnapura 5.56.26.25.14.54.64.74.94.94.74.44.7
Ratmalana Airport 5.66.26.14.94.44.54.64.84.94.64.44.8
Weerawila International Airport 5.46.16.15.14.54.54.64.94.94.64.34.6
Batticaloa Airport 5.36.26.45.54.84.84.84.94.94.64.34.6

This report illustrates the typical weather for Ratnapura, Ratmalana Airport, Weerawila International Airport, and Batticaloa Airport year round, 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 on this page vary between places and are discussed in detail on each place's dedicated 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.

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