Monthly weather forecast and climate
Gampaha, Sri Lanka

Weather in January

January is a hot winter month in Gampaha, Sri Lanka, with average temperature ranging between max 30.8°C (87.4°F) and min 22.8°C (73°F). In Gampaha, the average high-temperature is practically the same as in December - a hot 30.8°C (87.4°F). Weather in January »

Weather in February

February, the last month of the winter, in Gampaha, is also a hot month, with average temperature ranging between max 31.7°C (89.1°F) and min 23.1°C (73.6°F). In Gampaha, the average high-temperature is almost the same as in January - a still hot 31.7°C (89.1°F). Weather in February »

Weather in March

March, the first month of the spring, in Gampaha, is also a hot month, with average temperature fluctuating between 32.1°C (89.8°F) and 24.5°C (76.1°F). With an average high-temperature of 32.1°C (89.8°F) and an average low-temperature of 24.5°C (76.1°F), March is the warmest month. In March, the average heat index is appraised at a blistering 42.6°C (108.7°F). Weather in March »

Weather in April

April, like March, is another tropical spring month in Gampaha, Sri Lanka, with temperature in the range of an average low of 26°C (78.8°F) and an average high of 32°C (89.6°F). In April, the average high-temperature is practically the same as in March - a still hot 32°C (89.6°F). Weather in April »

Weather in May

May, the last month of the spring, in Gampaha, is another tropical month, with average temperature fluctuating between 26.4°C (79.5°F) and 30.8°C (87.4°F). In May, the average high-temperature is almost the same as in April - a still tropical 30.8°C (87.4°F). Weather in May »

Weather in June

June, the first month of the summer, in Gampaha, is still a warm month, with average temperature varying between 25.9°C (78.6°F) and 29.6°C (85.3°F). In June, the average high-temperature is essentially the same as in May - a moderately hot 29.6°C (85.3°F). Weather in June »

Weather in July

July, like June, in Gampaha, Sri Lanka, is a moderately hot summer month, with average temperature fluctuating between 29.2°C (84.6°F) and 25.5°C (77.9°F). July is the coldest month, with an average high-temperature of 29.2°C (84.6°F) and an average low-temperature of 25.5°C (77.9°F). The average heat index is appraised at a torrid 35.8°C (96.4°F). Weather in July »

Weather in August

August, the last month of the summer, in Gampaha, is also a moderately hot month, with average temperature ranging between min 25.4°C (77.7°F) and max 29.3°C (84.7°F). In August, the average high-temperature is practically the same as in July - a still warm 29.3°C (84.7°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Gampaha, Sri Lanka, with average temperature fluctuating between 25.2°C (77.4°F) and 29.5°C (85.1°F). In Gampaha, the average high-temperature is almost the same as in August - a still moderately hot 29.5°C (85.1°F). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Gampaha, Sri Lanka, with average temperature varying between 29.9°C (85.8°F) and 25.1°C (77.2°F). In Gampaha, Sri Lanka, the average high-temperature in October is essentially the same as in September - a still warm 29.9°C (85.8°F). Weather in October »

Weather in November

November, the last month of the autumn, in Gampaha, is a hot month, with average temperature ranging between max 30.2°C (86.4°F) and min 24.5°C (76.1°F). In Gampaha, the average high-temperature is relatively the same as in October - a hot 30.2°C (86.4°F). Weather in November »

Weather in December

December, the first month of the winter, in Gampaha, is also a moderately hot month, with average temperature ranging between min 23.7°C (74.7°F) and max 29.9°C (85.8°F). In December, the average high-temperature is relatively the same as in November - a warm 29.9°C (85.8°F). Weather in December »
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FAQ

What are the least humid months in Gampaha?

January and February, with an average relative humidity of 73%, are the least humid months in Gampaha.

How many days does it rain in Gampaha?

In Gampaha, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

What is the driest month in Gampaha?

The month with the least rainfall is January when the rain falls for 9.7 days and typically collects 29mm (1.14") of precipitation.

What are the months with the most sunshine in Gampaha?

Months with the most sunshine are January through April, with an average of 9.2h of sunshine.

What is the month with the highest UV index in Gampaha?

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index.

What is the warmest month in Gampaha?

The warmest month in Gampaha is March, with an average high-temperature of 32.1°C (89.8°F) and an average low-temperature of 24.5°C (76.1°F).

When are the longest days in Gampaha?

Months with the longest days are May through July, with an average of 12.5h of daylight.

When is the lowest UV index in Gampaha?

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index in Gampaha, Sri Lanka.

What are the most humid months in Gampaha?

Months with the highest humidity are June through August, with an average relative humidity of 82%.

What is the rainiest month in Gampaha?

The month with the most rainfall in Gampaha is June when the rain falls for 27.6 days and typically aggregates up to 231mm (9.09") of precipitation.

What is the coldest month in Gampaha?

The coldest month is July, with an average high-temperature of 29.2°C (84.6°F) and an average low-temperature of 25.5°C (77.9°F).

What is the month with the least sunshine in Gampaha?

The month with the least sunshine is November, with an average of 6.6h of sunshine.

What is the month with the shortest days in Gampaha?

December has the shortest days of the year, with an average of 11.7h of daylight.

Average temperature
Gampaha, Sri Lanka

Average temperature - Gampaha, Sri Lanka

The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is July (29.2°C).

The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.8°C).

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Average pressure
Gampaha, Sri Lanka

Average pressure - Gampaha, Sri Lanka

The month with the highest atmospheric pressure is January (1011.7mbar).
Months with the lowest atmospheric pressure are May and June (1008.4mbar).

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Average wind speed
Gampaha, Sri Lanka

Average wind speed - Gampaha, Sri Lanka

The windiest month (with the highest average wind speed) is June (18.3km/h).
The calmest month (with the lowest average wind speed) is March (9.1km/h).

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Average humidity
Gampaha, Sri Lanka

Average humidity - Gampaha, Sri Lanka

Months with the highest relative humidity are June, July and August (82%).
Months with the lowest relative humidity are January and February (73%).

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Average rainfall
Gampaha, Sri Lanka

Average rainfall - Gampaha, Sri Lanka

The wettest month (with the highest rainfall) is June (231mm).
The driest month (with the least rainfall) is January (29mm).

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Average rainfall days
Gampaha, Sri Lanka

Average rainfall days - Gampaha, Sri Lanka

The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is January (9.7 days).

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Average daylight / Average sunshine
Gampaha, Sri Lanka

Average daylight / Average sunshine - Gampaha, Sri Lanka

Months with the longest days are May, June and July (Average daylight: 12.5h).
The month with the shortest days is December (Average daylight: 11.7h).

Months with the most sunshine are January, February, March and April (Average sunshine: 9.2h).
The month with the least sunshine is November (Average sunshine: 6.6h).

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Average sunshine days
Gampaha, Sri Lanka

Average sunshine days - Gampaha, Sri Lanka

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is August (1.2 days).

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Average UV index
Gampaha, Sri Lanka

Average UV index - Gampaha, Sri Lanka

Months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
Months with the lowest UV index are May, June, August and October (UV index 6).

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Average visibility
Gampaha, Sri Lanka

Average visibility - Gampaha, Sri Lanka

Months with the highest visibility are January, February, March, April, June, July, September and December (10km).
Months with the lowest visibility are May, August, October and November (9km).

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