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Climate in Negombo (Sri Lanka)


Average weather, temperature, rainfall, sunshine hours

Flag - Sri Lanka

Negombo, where it is located


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Climate chart - Negombo
The climate of Negombo is tropical, hot all year round, with a relatively dry season in January and February and two very rainy periods, from April to June and from September to mid-December.
The city is located on the west coast of Sri Lanka, about 30 km (18 mi) north of Colombo.
We are in the rainiest part of the coast, the one that receives abundant rains even in the period that runs from April to June.
Temperatures are quite stable, however, during the day they are a bit higher from January to April. During this period, the temperature gradually increases, and with it showers and thunderstorms, which become frequent in April.
From mid-May to September is the period of the southwest monsoon, which brings abundant rains especially in the first part (mid-May-mid-June) and in the last one (September). In fact, in July and August, the monsoon moves north and mainly affects India, while in Sri Lanka the rains are not very frequent, however, in Negombo and on the south-west coast, they still amount to around 80/100 mm (3.2/4 in) per month.
From October to mid-December, the rains are frequent and abundant because tropical depressions often form in Sri Lanka.
From mid-December to February, the north-east monsoon period, is the coolest of the year, especially in the first part, it is also a dry period because we are on the western side, protected by the mountains.

Negombo

Sri Lanka is in the path of tropical cyclones. Typically, on the Indian Ocean north of the Equator, cyclones occur from April to December, although Sri Lanka is usually only affected in November and December, and more rarely in May. In fact, usually in mid-May, sometimes there can be heavy rains, caused by cyclones that form in the Bay of Bengal, even if they are at the beginning of their life. However, since the sea is warm all year round, in theory they can also form from January to March, perhaps in a light form (such as tropical storms).

Best Time



The best time to visit Negombo is from January to late February or mid-March, since it is the dry season.
In the months of July and August, there is another quite good period, in which the rains are relatively rare, however, this depends on the years, moreover, the sun shines less frequently and the sea is often rough, since the wind carried by the monsoon blows from the southwest.

Negombo - Climate data


In Negombo, the average temperature of the coldest month (December) is of 27 °C, that of the warmest month (May) is of 28,6 °C. Here are the average temperatures.
Negombo - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January22,23227,1
February22,632,727,6
March23,832,728,2
April24,632,428,5
May25,631,728,6
June25,630,828,2
July25,630,628,1
August25,530,628
September2530,727,8
October24,230,627,4
November23,430,927,2
December22,931,127
Year24,331,427,75

Precipitation amounts to 2070 millimeters per year: it is therefore abundant. It ranges from 53,6 millimeters in the driest month (January) to 362,2 millimeters in the wettest one (October). Here is the average precipitation.
Negombo - Average precipitation
MonthRain (mm)Days
January544
February564
March1057
April21612
May28115
June15814
July928
August978
September21414
October36218
November30516
December1318
Year2070128

The sea temperature ranges from 27 °C in August to 29,5 °C in April. Here are the average sea temperatures.
Negombo - Sea temperature
MonthTemperatures (°C)
January27,5
February28
March29
April29,5
May29
June28
July27,5
August27
September27,5
October28
November28,5">
December28
Year28,2

Negombo - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January is generally a warm to hot, muggy month. The average temperature is of 27,1 °C, with a minimum of 22,2 °C and a maximum of 32 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 19 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 34 °C.
Rain iconPrecipitation amounts to 53,6 mm, distributed over 4 days.
The day lasts on average 11 hours and 50 minutes.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of 14,8 kph.
Sea iconThe average sea temperature is of 27,6 °C. Therefore, the sea is pleasantly warm and allows long swims.


February is generally a very hot, muggy month. The average temperature is of 27,6 °C, with a minimum of 22,6 °C and a maximum of 32,7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 20 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 35,5 °C.
Rain iconPrecipitation amounts to 56,4 mm, distributed over 4 days.
The day lasts on average 11 hours and 55 minutes.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of 12,3 kph.
Sea iconThe average sea temperature is of 28 °C. Therefore, the sea is pleasantly warm and allows long swims.


March is generally a very hot, muggy month. The average temperature is of 28,2 °C, with a minimum of 23,8 °C and a maximum of 32,7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 21,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 35 °C.
Rain iconPrecipitation amounts to 105,1 mm, distributed over 7 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of 9,7 kph.
Sea iconThe average sea temperature is of 28,9 °C. Therefore, the sea is pleasantly warm and allows long swims.


April is generally a very hot, muggy month. The average temperature is of 28,5 °C, with a minimum of 24,6 °C and a maximum of 32,4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 22,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33,5 °C.
Rain iconPrecipitation amounts to 216,1 mm, distributed over 12 days.
The day lasts on average 12 hours and 20 minutes.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 9,5 kph.
Sea iconThe average sea temperature is of 29,7 °C. Therefore, the sea is pleasantly warm and allows long swims.


May, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 28,6 °C, with a minimum of 25,6 °C and a maximum of 31,7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33 °C.
Rain iconPrecipitation amounts to 281,3 mm, distributed over 15 days.
The day lasts on average 12 hours and 30 minutes.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 13,6 kph.
Sea iconThe average sea temperature is of 29,2 °C. Therefore, the sea is pleasantly warm and allows long swims.


June is generally a very hot, muggy month. The average temperature is of 28,2 °C, with a minimum of 25,6 °C and a maximum of 30,8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32,5 °C.
Rain iconPrecipitation amounts to 157,9 mm, distributed over 14 days.
The day lasts on average 12 hours and 30 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 15,4 kph.
Sea iconThe average sea temperature is of 28,1 °C. Therefore, the sea is pleasantly warm and allows long swims.


July is generally a very hot, muggy month. The average temperature is of 28,1 °C, with a minimum of 25,6 °C and a maximum of 30,6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 22,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 31,5 °C.
Rain iconPrecipitation amounts to 91,7 mm, distributed over 8 days.
The day lasts on average 12 hours and 30 minutes.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 15,5 kph.
Sea iconThe average sea temperature is of 27,3 °C. Therefore, the sea is pleasantly warm and allows long swims.


August is generally a very hot, muggy month. The average temperature is of 28 °C, with a minimum of 25,5 °C and a maximum of 30,6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 31,5 °C.
Rain iconPrecipitation amounts to 96,9 mm, distributed over 8 days.
The day lasts on average 12 hours and 20 minutes.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 15,7 kph.
Sea iconThe average sea temperature is of 27,2 °C. Therefore, the sea is pleasantly warm and allows long swims.


September is generally a very hot, muggy month. The average temperature is of 27,8 °C, with a minimum of 25 °C and a maximum of 30,7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32 °C.
Rain iconPrecipitation amounts to 214,4 mm, distributed over 14 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 13,8 kph.
Sea iconThe average sea temperature is of 27,6 °C. Therefore, the sea is pleasantly warm and allows long swims.


October is generally a warm to hot, muggy month. The average temperature is of 27,4 °C, with a minimum of 24,2 °C and a maximum of 30,6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 22,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32 °C.
Rain iconPrecipitation amounts to 362,2 mm, distributed over 18 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of 10,6 kph.
Sea iconThe average sea temperature is of 28,1 °C. Therefore, the sea is pleasantly warm and allows long swims.


November is generally a warm to hot, muggy month. The average temperature is of 27,2 °C, with a minimum of 23,4 °C and a maximum of 30,9 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 21,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33,5 °C.
Rain iconPrecipitation amounts to 304,6 mm, distributed over 16 days.
The day lasts on average 11 hours and 50 minutes.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of 9,2 kph.
Sea iconThe average sea temperature is of 28,5 °C. Therefore, the sea is pleasantly warm and allows long swims.


December, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of 27 °C, with a minimum of 22,9 °C and a maximum of 31,1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 20,5 °C.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33 °C.
Rain iconPrecipitation amounts to 130,8 mm, distributed over 8 days.
The day lasts on average 11 hours and 40 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 13 kph.
Sea iconThe average sea temperature is of 28 °C. Therefore, the sea is pleasantly warm and allows long swims.

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