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Contents
- The climate of Gampaha
- The best time to visit Gampaha
- The worst time to visit Gampaha
- Spring weather in Gampaha
- Summer weather in Gampaha
- Autumn weather in Gampaha
- Winter weather in Gampaha
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Gampaha
Gampaha, Sri Lanka, nestled in the tropical zone of the globe, experiences what is identified as an Af - Tropical Rainforest climate under the Köppen climate classification. This climatic phenomenon is characterized by high temperatures throughout the year, along with a consistency in humidity and significant rainfall.
Taking a closer look at the climatic parameters, the temperatures sit comfortably from 22.8°C (73°F) to 32.1°C (89.8°F). These figures suggest a relatively warm tropical climate, with minor fluctuations, promoting an unmistakable sense of heat year-round. This high heat is maintained through the year and is accompanied by relative humidity ranging from 73% to 82%.
Tropical rainforest climates are renowned for their rainfall. Gampaha is no exception, with a clear pattern of precipitation increasing from 29mm (1.14") in January to a peak of 231mm (9.09") in June, before falling back to 139mm (5.47") by December. There's also the frequency of these rainy days to take into consideration. Starting at 9.7 days in January, the town sees a steady increase to as many as 28.4 days in August.
Additionally, cloud cover in Gampaha fluctuates from a low 21% to a high of 57% throughout the year - greater in the middle months around June and reducing towards the year's end.
Taking a closer look at the climatic parameters, the temperatures sit comfortably from 22.8°C (73°F) to 32.1°C (89.8°F). These figures suggest a relatively warm tropical climate, with minor fluctuations, promoting an unmistakable sense of heat year-round. This high heat is maintained through the year and is accompanied by relative humidity ranging from 73% to 82%.
Tropical rainforest climates are renowned for their rainfall. Gampaha is no exception, with a clear pattern of precipitation increasing from 29mm (1.14") in January to a peak of 231mm (9.09") in June, before falling back to 139mm (5.47") by December. There's also the frequency of these rainy days to take into consideration. Starting at 9.7 days in January, the town sees a steady increase to as many as 28.4 days in August.
Additionally, cloud cover in Gampaha fluctuates from a low 21% to a high of 57% throughout the year - greater in the middle months around June and reducing towards the year's end.
The best time to visit Gampaha
Considering the climatic conditions, the best time to visit Gampaha would arguably be during the months of January and February. During these months, the temperatures stay at a reasonably comfortable range from 28.6°C (83.5°F) and to 32°C (89.6°F). Additionally, rainfall is relatively low compared to the rest of the year, coming in at 29mm (1.14") to 36mm (1.42") on average. Visitors, during this time, can expect around 11.8hrs to 11.9hrs of daylight and enjoy up to 9.2hrs of sunshine on a clear day.
The worst time to visit Gampaha
On the flip side, the months from May to September can be a challenging time for visitors. These months experience the heaviest rainfall, peaking at 231mm (9.09") in June. Additionally, humidity levels rise to 80% to 82% - a potentially uncomfortable scenario for those unused to tropical humidity. Gradually diminishing daylight hours and a significant cloud cover coupled with a noteworthy decrease in sunshine hours make these months less conducive to outdoor activities.
Spring weather in Gampaha
Typically, "spring" weather in Gampaha, which falls in March and April, breaks away from the traditional notions of mild and dry conditions. These months see a blend of high temperatures lingering around 32°C (89.6°F). Rainfall dramatically increases from 55mm (2.17") in March to 112mm (4.41") in April, which is a significant upturn when compared to preceding months. Despite these rainfall figures, visitors can still expect around 12.1hrs to 12.3hrs of daylight with the relative humidity hovering at 77%.
Summer weather in Gampaha
The "summer" period in Gampaha, identified as May through August, is characterized by high temperatures fluctuating between 29.2°C (84.6°F) to 30.8°C (87.4°F). This period witnesses the highest rainfall of the year, peaking at 231mm (9.09") in June. Humidity during these months is also at its highest, hovering between 80% to 82%. Despite the increased cloud cover, daylight remains fairly consistent in these months, staying in the 12.3hrs to 12.5hrs range.
Autumn weather in Gampaha
The "autumn" season, running from September to November, continues to uphold the warm tropical climate trend. Temperatures dip slightly, ranging from 29.9°C (85.8°F) to 29.5°C (85.1°F) and rainfall remains above 153mm (6.02"), indicating a sustained pattern of wet climate. Yet, relative humidity decreases somewhat, oscillating between 79% and 81%. Daylight hours also fall marginally to around 12hrs towards November.
Winter weather in Gampaha
The "winter" months of December to February maintain a warm climate, contrary to the conventional chill of winters. Temperatures hold between 29.9°C (85.8°F) and 30.8°C (87.4°F). The rainfall takes a significant dip during this period, falling to as low as 29mm (1.14") in January and a high of 36mm (1.42") in February, making it the driest part of the year. Alongside declining rainfall and humidity of 73%, there is a slight decrease in daylight hours from 11.8hrs to 11.7hrs.
Weather in January
Gampaha,City, begins the year with a moderate climate. The temperatures are mild and the city starts experiencing more rainfall. A notable characteristic of January is its relative humidity of 73% which, combined with an average rainfall of 29mm (1.14"), contributes to a moist, cool atmosphere. Weather in January »
Weather in February
The weather in Gampaha, Sri Lanka in February transitions from the cooler January. Temperatures stay slight with an almost negligible alteration, as rainfall starts to pick up. An increase in rainfall to 36mm (1.42") over 10.2 days suggests the commencement of the wet period. Weather in February »
Weather in March
The weather in Gampaha makes a significant leap in March. There is an escalation in rainfall, reaching 55mm (2.17") over 18.2 days, indicative of the impending monsoon season. Despite this, the temperatures are still reasonably warm, whilst the hours of sunshine show a minor increase. Weather in March »
Weather in April
April witnesses a further escalation in weather intensity in Gampaha. The rainfall doubles to a hefty 112mm (4.41"), making this month one of the wettest of the year. The atmosphere tends to be heavier with an increase in relative humidity to 77%. Weather in April »
Weather in May
May marks the advent of the monsoon season in full force in Gampaha, Sri Lanka. Rainfall hits a high of 204mm (8.03"), falling over 26.3 days in this month. The increase in rainfall accompanied by a slight drop in temperature signifies this transition. Weather in May »
Weather in June
In June, Gampaha is in the grip of a full-blown monsoon. A minor increase in maximum and minimum temperatures compensates for the heightened rainfall, which peaks at 231mm (9.09"). Thick cloud coverage becomes more prominent, and the relative humidity surges to 82%, heightening the sensation of a wet, tropical climate. Weather in June »
Weather in July
As July picks up in Gampaha, there's a minor reduction in rainfall to 177mm (6.97"), but the weather remains dominated by the monsoon season. The drop in rainfall comes with a reduction in temperature, introducing a slight chill in the air. Weather in July »
Weather in August
In Gampaha, August brings in a marginal surge in rainfall to 210mm (8.27"), prolonging the monsoon season. The cloud percentage scales up to 54%, forming a thick cover that further limits sunshine. Nevertheless, the daylight remains adequate for daily activities. Weather in August »
Weather in September
September witnesses the start of a transition period in Gampaha. While the rainfall drops to 153mm (6.02"), the wind strength sees a decrease, reflecting the pending end of the monsoon season. Cloud coverage remains relatively high, even as the number of sunlight hours starts picking up. Weather in September »
Weather in October
The weather in Gampaha in October reflects further transition. The rainfall inches up to 224mm (8.82") amid the receding monsoon. Despite the high rainfall, daylight and sunshine hours increase, indicating a gradual return to warmer days. Weather in October »
Weather in November
November in Gampaha marks a significant shift in weather patterns. The city experiences reduced rainfall down to 174mm (6.85"), indicating a break from the heavy monsoons. Increased sunshine and daylight hours connote the onset of a drier season. Weather in November »
Weather in December
As the year ends in Gampaha, the weather takes on a decidedly drier tone. Rainfall decreases further to 139mm (5.47"), indicating the arrival of the dry spell. Daylight hours marginally decrease while winds pick up pace once more, with maximum wind speed increasing up to 15km/h (9.3mph). Weather in December »
[Resources]Frequently asked questions
What are the least humid months in Gampaha?
January and February, with an average relative humidity of 73%, are the least humid months.
What is the driest month in Gampaha?
The month with the least rainfall in Gampaha, Sri Lanka, is January, when the rain falls for 9.7 days and typically collects 29mm (1.14") of precipitation.
How many days does it rain in Gampaha?
In Gampaha, Sri Lanka, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.
What is the month with the most sunshine in Gampaha?
January through April, with an average of 9.2h of sunshine, are months with the most sunshine in Gampaha.
When is 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 in Gampaha, Sri Lanka.
What time of the year is the hottest in Gampaha?
The temperatures in Gampaha reach their highest averages in March, with highs of 32.1°C (89.8°F) and lows of 24.5°C (76.1°F).
What are the months with the lowest UV index in Gampaha?
The months with the lowest UV index in Gampaha, Sri Lanka, are May, June, August and October, with an average maximum UV index of 6.
What is the most humid month in Gampaha?
The months with the highest humidity are June through August, with an average relative humidity of 82%.
What is the rainiest month in Gampaha?
June is the month with the most rainfall. Rain falls for 27.6 days and accumulates 231mm (9.09") of precipitation.
When are the longest days in Gampaha?
June has the longest days of the year, with an average of 12h and 30min of daylight.
What are the coldest months in Gampaha?
July, recording an average high temperature of 29.2°C (84.6°F) and a low temperature of 25.5°C (77.9°F), is Gampaha's coldest month.
What is the month with the least sunshine in Gampaha?
The month with the least sunshine in Gampaha is November, with an average of 6.6h of sunshine.
What is the month with the shortest days in Gampaha?
With an average of 11h and 42min of daylight, December has the shortest days of the year.
Is there Daylight Saving Time (DST) in Gampaha?
Gampaha, Sri Lanka, does not utilize Daylight Saving Time (DST). +0530 timezone is used throughout the entire year.
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).
Average pressure
Gampaha, Sri Lanka
- Average pressure in January:
1011.7mbar - Average pressure in February:
1011.3mbar - Average pressure in March:
1010.7mbar - Average pressure in April:
1009.6mbar - Average pressure in May:
1008.4mbar - Average pressure in June:
1008.4mbar
- Average pressure in July:
1008.5mbar - Average pressure in August:
1008.8mbar - Average pressure in September:
1009.6mbar - Average pressure in October:
1009.9mbar - Average pressure in November:
1009.8mbar - Average pressure in December:
1010.5mbar
The month with the highest atmospheric pressure is January (1011.7mbar).
The months with the lowest atmospheric pressure are May and June (1008.4mbar).
Average wind speed
Gampaha, Sri Lanka
- Average wind speed in January:
16.2km/h - Average wind speed in February:
12.9km/h - Average wind speed in March:
9.1km/h - Average wind speed in April:
10km/h - Average wind speed in May:
15.5km/h - Average wind speed in June:
18.3km/h
- Average wind speed in July:
17.1km/h - Average wind speed in August:
17km/h - Average wind speed in September:
16km/h - Average wind speed in October:
11.8km/h - Average wind speed in November:
10.3km/h - Average wind speed in December:
14.1km/h
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).
Average humidity
Gampaha, Sri Lanka
The months with the highest relative humidity are June, July and August (82%).
The months with the lowest relative humidity are January and February (73%).
Average rainfall
Gampaha, Sri Lanka
- Average rainfall in January:
29mm - Average rainfall in February:
36mm - Average rainfall in March:
55mm - Average rainfall in April:
112mm - Average rainfall in May:
204mm - Average rainfall in June:
231mm
- Average rainfall in July:
177mm - Average rainfall in August:
210mm - Average rainfall in September:
153mm - Average rainfall in October:
224mm - Average rainfall in November:
174mm - Average rainfall in December:
139mm
The wettest month (with the highest rainfall) is June (231mm).
The driest month (with the least rainfall) is January (29mm).
Average rainfall days
Gampaha, Sri Lanka
- Average rainfall days in January:
9.7 days - Average rainfall days in February:
10.2 days - Average rainfall days in March:
18.2 days - Average rainfall days in April:
23.4 days - Average rainfall days in May:
26.3 days - Average rainfall days in June:
27.6 days
- Average rainfall days in July:
27.7 days - Average rainfall days in August:
28.4 days - Average rainfall days in September:
24.4 days - Average rainfall days in October:
25.9 days - Average rainfall days in November:
23.3 days - Average rainfall days in December:
20.3 days
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).
Average daylight / Average sunshine
Gampaha, Sri Lanka
- Average daylight in January:
11h and 5min - Average daylight in February:
11h and 5min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 2min - Average daylight in May:
12h and 2min - Average daylight in June:
12h and 3min
- Average daylight in July:
12h and 3min - Average daylight in August:
12h and 2min - Average daylight in September:
12h and 1min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 5min - Average daylight in December:
11h and 4min
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 1min - Average sunshine in February:
9h and 1min - Average sunshine in March:
9h and 1min - Average sunshine in April:
9h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
8h and 1min
- Average sunshine in July:
8h and 0min - Average sunshine in August:
7h and 3min - Average sunshine in September:
7h and 4min - Average sunshine in October:
7h and 5min - Average sunshine in November:
6h and 4min - Average sunshine in December:
7h and 0min
The months with the most sunshine are January, February, March and April (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).
Average sunshine days
Gampaha, Sri Lanka
- Average sunshine days in January:
20 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
10.4 days - Average sunshine days in April:
4.6 days - Average sunshine days in May:
3.6 days - Average sunshine days in June:
1.7 days
- Average sunshine days in July:
2.1 days - Average sunshine days in August:
1.2 days - Average sunshine days in September:
3 days - Average sunshine days in October:
3.3 days - Average sunshine days in November:
6.3 days - Average sunshine days in December:
9.5 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is August (1.2 days).
Average UV index
Gampaha, 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
Gampaha, 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 21).
Average visibility
Gampaha, Sri Lanka
The months with the highest visibility are January, February, March, April, June, July, September and December (10km).
The months with the lowest visibility are May, August, October and November (9km).
Gampaha, Sri Lanka
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