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Gampaha Weather in December
Gampaha in December averages 31°C (88°F) during the day and 23°C (73°F) at night. December is part of the rainy season, so frequent rainfall is typical.
Rainfall in Gampaha in December
Gampaha is in the rainy season in December, with rain on around 10 days and an average of 172 mm (6.8 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in Gampaha in December
In December, expect very high temperatures in Gampaha, with highs of 31°C (88°F) and lows of 23°C (73°F) at night. The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With lows around 23°C (73°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Gampaha in December
Enjoy a sunny month with about 217 hours of sunshine, even though this month falls in the wet season. There is still enough sun to enjoy the outdoors.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and December typically offer the best weather for Gampaha.
Gampaha Temperature in December
Min Temperature
23°C (73°F)
Max Temperature
31°C (88°F)
Chance of Rain
34%
Precipitation
172 mm (6.8 in)
Rainy days
10 days
Humidity
72% *
Sunshine
217 hours *
Percentage Sunshine
*
* Data from: Colombo, Sri Lanka (25 KM, 15 Miles).
Gampaha Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Gampaha - and find the best time to visit.
Best Places in Sri Lanka in December
Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month. See all of Sri Lanka in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Gampaha in December
Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Gampaha in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming8/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Gampaha 3-Day Forecast
More climate data for Gampaha
Temperature Rainfall Sunshine Humidity
See the full Gampaha climate overview or explore weather in Sri Lanka.
Popular in December
Where to go in December - average daytime high across popular destinations.
Colombo
31°C (88°F) Negombo31°C (88°F) Unawatuna29°C (84°F) Galle29°C (84°F) Mirissa30°C (86°F) Hikkaduwa29°C (84°F) Kandy27°C (81°F) Nuwara Eliya25°C (77°F) Bucket list
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