Climate and monthly weather forecastAlwis Town, Sri Lanka
Climate and monthly weather forecast
Weather in January
January is a hot winter month in Alwis Town, Sri Lanka, with an average temperature varying between 23.1°C (73.6°F) and 30.8°C (87.4°F). Alwis Town experiences a recorded average high-temperature of a tropical 30.8°C (87.4°F) in January, closely aligned with December's 29.9°C (85.8°F). Weather in January »Weather in February
The last month of the winter, February, is another hot month in Alwis Town, Sri Lanka, with an average temperature ranging between max 31.4°C (88.5°F) and min 23.3°C (73.9°F). With the onset of February, Alwis Town's average high-temperature clocks in at a still hot 31.4°C (88.5°F), showing a minor fluctuation from the previous month. Weather in February »Weather in March
The first month of the spring, March, is also a hot month in Alwis Town, Sri Lanka, with temperature in the range of an average low of 24.3°C (75.7°F) and an average high of 31.8°C (89.2°F). The warmest months are March and April, with an average high-temperature of 31.8°C (89.2°F). March's mean heat index is estimated at an extremely hot 42°C (107.6°F). Weather in March »Weather in April
April, like March, is another tropical spring month in Alwis Town, Sri Lanka, with temperature in the range of an average high of 31.8°C (89.2°F) and an average low of 25.8°C (78.4°F). March and April are identified as the warmest months, with an average high-temperature of 31.8°C (89.2°F). For most parts of April, the heat index is estimated at a blisteringly hot 42°C (107.6°F). Weather in April »Weather in May
The last month of the spring, May, is another hot month in Alwis Town, Sri Lanka, with an average temperature varying between 26.3°C (79.3°F) and 30.6°C (87.1°F). The average high-temperature during May registers at a still tropical 30.6°C (87.1°F), closely corresponding to the preceding month. Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Alwis Town, Sri Lanka, with an average temperature varying between 29.3°C (84.7°F) and 25.8°C (78.4°F). With the advent of June, Alwis Town experiences an average high-temperature of a moderately hot 29.3°C (84.7°F), mirroring a close resemblance to the previous month. Weather in June »Weather in July
July, like June, in Alwis Town, Sri Lanka, is another warm summer month, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 25.3°C (77.5°F). Alwis Town experiences its coldest period in July and August, averaging a high-temperature of 28.9°C (84°F). In July, the average heat index is estimated at a very hot 35°C (95°F). Weather in July »Weather in August
August, the last month of the summer in Alwis Town, is also a moderately hot month, with an average temperature varying between 28.9°C (84°F) and 25.2°C (77.4°F). Alwis Town's coldest season falls during July and August, averaging a high-temperature of 28.9°C (84°F). In August, the average heat index is estimated at a fiery hot 35°C (95°F). Weather in August »Weather in September
September, the first month of the autumn in Alwis Town, is still a warm month, with an average temperature fluctuating between 24.9°C (76.8°F) and 29.1°C (84.4°F). The transition into September shows a subtle variation to a still moderately hot 29.1°C (84.4°F) from August's 28.9°C (84°F) in the average high-temperature. Weather in September »Weather in October
October is a tropical autumn month in Alwis Town, Sri Lanka, with temperature in the range of an average low of 25°C (77°F) and an average high of 30°C (86°F). October's onset records a minor alteration in the average high-temperature to a hot 30°C (86°F) from September's 29.1°C (84.4°F). Weather in October »Weather in November
The last month of the autumn, November, is another tropical month in Alwis Town, Sri Lanka, with an average temperature ranging between min 24.5°C (76.1°F) and max 30.1°C (86.2°F). November's presence records an average high-temperature of a still tropical 30.1°C (86.2°F), closely mirroring October's climate. Weather in November »Weather in December
December, the first month of the winter in Alwis Town, is still a warm month, with an average temperature varying between 29.9°C (85.8°F) and 23.7°C (74.7°F). December brings an average high-temperature of a warm 29.9°C (85.8°F), nearly identical to the preceding month. Weather in December »Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January and February, with an average relative humidity of 74%, are the least humid months.
The month with the least rainfall in Alwis Town, Sri Lanka, is January, when the rain falls for 11.6 days and typically collects 40mm (1.57") of precipitation.
Throughout the year, in Alwis Town, Sri Lanka, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.
With an average of 9.1h of sunshine, January has the most sunshine of the year in Alwis Town, Sri Lanka.
January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Alwis Town.
Temperatures reach their maximum during March and April, recording an average high-temperature of 31.8°C (89.2°F).
The months with the lowest UV index in Alwis Town are May, June, August and October, with an average maximum UV index of 6.
The months with the highest humidity in Alwis Town are June through August, with an average relative humidity of 83%.
June is the month with the most rainfall in Alwis Town, Sri Lanka. Rain falls for 29.3 days and accumulates 341mm (13.43") of precipitation.
June has the longest days of the year in Alwis Town, Sri Lanka, with an average of 12h and 30min of daylight.
Lowest temperatures in Alwis Town are observed in July and August, averaging a high-temperature of 28.9°C (84°F).
November has the least sunshine of the year, with an average of 6.7h of sunshine.
December has the shortest days of the year, with an average of 11h and 42min of daylight.
Alwis Town does not utilize Daylight Saving Time (DST). +0530 timezone is used over the entire year.
Average temperature
Alwis Town, Sri Lanka
The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).
The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).
Average pressure
Alwis Town, Sri Lanka
- Average pressure in January:
1011.6mbar - Average pressure in February:
1011.3mbar - Average pressure in March:
1010.7mbar - Average pressure in April:
1009.7mbar - Average pressure in May:
1008.6mbar - Average pressure in June:
1008.7mbar
- Average pressure in July:
1008.7mbar - Average pressure in August:
1009.1mbar - Average pressure in September:
1009.8mbar - Average pressure in October:
1009.9mbar - Average pressure in November:
1009.8mbar - Average pressure in December:
1010.4mbar
The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed
Alwis Town, Sri Lanka
- Average wind speed in January:
12.8km/h - Average wind speed in February:
9.9km/h - Average wind speed in March:
8km/h - Average wind speed in April:
8.6km/h - Average wind speed in May:
12.9km/h - Average wind speed in June:
15.1km/h
- Average wind speed in July:
14.1km/h - Average wind speed in August:
14.2km/h - Average wind speed in September:
13.2km/h - Average wind speed in October:
10.2km/h - Average wind speed in November:
8.9km/h - Average wind speed in December:
11.5km/h
The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).
Average humidity
Alwis Town, Sri Lanka
The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall
Alwis Town, Sri Lanka
- Average rainfall in January:
40mm - Average rainfall in February:
47mm - Average rainfall in March:
66mm - Average rainfall in April:
137mm - Average rainfall in May:
306mm - Average rainfall in June:
341mm
- Average rainfall in July:
256mm - Average rainfall in August:
287mm - Average rainfall in September:
206mm - Average rainfall in October:
237mm - Average rainfall in November:
191mm - Average rainfall in December:
148mm
The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).
Average rainfall days
Alwis Town, Sri Lanka
- Average rainfall days in January:
11.6 days - Average rainfall days in February:
13.8 days - Average rainfall days in March:
19.8 days - Average rainfall days in April:
25.4 days - Average rainfall days in May:
28.8 days - Average rainfall days in June:
29.3 days
- Average rainfall days in July:
29.8 days - Average rainfall days in August:
30.2 days - Average rainfall days in September:
26.9 days - Average rainfall days in October:
27 days - Average rainfall days in November:
25.7 days - Average rainfall days in December:
21.1 days
The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).
Average daylight / Average sunshine
Alwis Town, Sri Lanka
- Average daylight in January:
11h and 48min - Average daylight in February:
11h and 54min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 18min - Average daylight in May:
12h and 24min - Average daylight in June:
12h and 30min
- Average daylight in July:
12h and 30min - Average daylight in August:
12h and 18min - Average daylight in September:
12h and 12min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 48min - Average daylight in December:
11h and 42min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in January:
9h and 6min - Average sunshine in February:
9h and 0min - Average sunshine in March:
9h and 0min - Average sunshine in April:
8h and 54min - Average sunshine in May:
8h and 36min - Average sunshine in June:
8h and 0min
- Average sunshine in July:
7h and 36min - Average sunshine in August:
7h and 0min - Average sunshine in September:
7h and 24min - Average sunshine in October:
7h and 42min - Average sunshine in November:
6h and 42min - Average sunshine in December:
6h and 54min
The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days
Alwis Town, Sri Lanka
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
12.7 days - Average sunshine days in March:
8.2 days - Average sunshine days in April:
2.6 days - Average sunshine days in May:
1.3 days - Average sunshine days in June:
0.3 days
- Average sunshine days in July:
0.4 days - Average sunshine days in August:
0.3 days - Average sunshine days in September:
1.5 days - Average sunshine days in October:
1.7 days - Average sunshine days in November:
3.6 days - Average sunshine days in December:
8.3 days
The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).
Average UV index
Alwis Town, Sri Lanka
The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).
Average cloud cover
Alwis Town, Sri Lanka
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility
Alwis Town, Sri Lanka
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
