Avissawella Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Avissawella.
Climate overview of Avissawella
Avissawella, in Colombo District, Sri Lanka, experiences a tropical rainforest climate with consistently very warm temperatures year-round. The area receives high levels of precipitation throughout the year, with particularly heavy rainfall during the southwest monsoon from April to September and the northeast monsoon from October to December.
This town attracts tourists with its proximity to the Kelani River and is popular for white-water rafting experiences through the jungle. Let's now guide you through the climate details for a complete overview on the best time to visit.
Avissawella Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Avissawella - and find the best time to visit.
Monthly Temperature in Avissawella
The climate in Avissawella remains fairly constant, offering very warm temperatures throughout the year. On average, daytime temperatures range from a very warm 33°C (91°F) in March to a comfortable 29°C (84°F) in July.
Nighttime temperatures range from 24°C (75°F) in March to 22°C (72°F) in July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Avissawella
Avissawella is known for its substantial rainfall, with annual precipitation reaching 3757 mm (148 in). The seasons in Avissawella bring significant changes in precipitation. The wettest month, November, receives heavy rainfall, with an average of 474 mm (19 in) of precipitation. This rainfall is distributed across 15 rainy days.
In contrast, the driest month, January, experiences much less rainfall, totaling 156 mm (6.1 in) over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Avissawella Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Avissawella
Avissawella enjoys sunny spells year-round. March sees up to 9.2 hours of daily sunshine, perfect for a sunny trip. September, the least sunny month, still offers a generous 6.3 hours of sun despite this cloudier time of the year.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Avissawella by Month
The relative humidity is high throughout the year in Avissawella.
The city experiences its highest humidity in June, reaching 79%. In January, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Avissawella
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January
- Warmest weather: February, March and April
- Most sunshine: March
- Fewest rainy days: January and February
Frequently asked questions about the climate in Avissawella
What is the best time to visit Avissawella?
January typically offers the most optimal weather in Avissawella. In contrast, February, March, April, May, June, July, August, September, October, November and December tend to have less optimal conditions.
What temperatures can I expect in Avissawella?
Daytime highs range from 29°C (84°F) in July to 33°C (91°F) in March. Nighttime lows range from 22°C (72°F) to 24°C (75°F). Temperatures stay relatively stable year-round.
How much rain does Avissawella get?
Annual rainfall is around 3757 mm (148 in). November is the wettest month with 474 mm (19 in), while January is the driest with 156 mm (6.1 in).
How sunny is Avissawella?
Avissawella receives around 2,630 hours of sunshine per year. March is the sunniest month with 276 hours, while September is the cloudiest with just 190 hours. Overall, Avissawella enjoys abundant sunshine.
Avissawella 3-Day Forecast
Avissawella 3-Day Forecast
Avissawella on the map
Avissawella is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Colombo
30°C (86°F) Galle29°C (84°F) Mirissa29°C (84°F) Hikkaduwa29°C (84°F) Negombo30°C (86°F) Kandy
28°C (82°F) Unawatuna29°C (84°F) Nuwara Eliya27°C (81°F) 
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