Biyagama Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Biyagama.
Climate overview of Biyagama
The climate in Biyagama, Sri Lanka, is remarkably consistent, with temperatures year-round averaging 32°C (90°F). The warmest month is March at 34°C (93°F), and the coolest is July at 31°C (88°F).
Rainfall is high, totalling around 2760 mm (109 in) per year. October is the wettest month and January the driest. Sunshine peaks in March, when the city sees around 9.2 hours of sunshine per day.
Biyagama Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Biyagama - and find the best time to visit.
Monthly Temperature in Biyagama
In Biyagama temperatures are generally consistent throughout the year. Average maximum daytime temperatures range from a very warm 34°C (93°F) in March, the warmest time of the year, to a very warm 31°C (88°F) during cooler months like July.
At night, you can expect temperatures ranging from 26°C (79°F) in March to around 23°C (73°F) during July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Biyagama
Biyagama experiences significant rainfall throughout the year, averaging 2760 mm (109 in) of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, October it receives heavy rainfall, averaging 374 mm (15 in) of precipitation, recorded across 16 rainy days. In contrast, the driest month January brings less rainfall, with 78 mm (3.1 in) over 5 rainy days. For more details, please visit our Biyagama 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 Biyagama
While the amount of sunshine in Biyagama varies throughout the year, all seasons offer their own charm. Enjoy up to 9.2 hours of daily sun in March, and experience slightly darker atmosphere in September, with about 6.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Water Temperature in Biyagama
The mean water temperature over the year ranges from 26°C (79°F) in August to 28°C (82°F) in January.
Water temperature over the year
Humidity in Biyagama by Month
The relative humidity is high throughout the year in Biyagama.
The city experiences its highest humidity in June, reaching 79%. In February, 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
Wind Speed in Biyagama
The mean wind speed varies between 1 m/s (2 knots) and 2 m/s (4 knots) throughout the year. It is lowest in February, March, April, October, November and December and highest during January, May, June, July, August and September. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Biyagama
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
- Best for swimming: Any time of year. The sea stays pleasantly warm year-round.
Frequently asked questions about the climate in Biyagama
What is the best time to visit Biyagama?
January typically offers the most optimal weather in Biyagama. 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 Biyagama?
Daytime highs range from 31°C (88°F) in July to 34°C (93°F) in March. Nighttime lows range from 23°C (73°F) to 26°C (79°F). Temperatures stay relatively stable year-round.
How much rain does Biyagama get?
Annual rainfall is around 2760 mm (109 in). October is the wettest month with 374 mm (15 in), while January is the driest with 78 mm (3.1 in).
How sunny is Biyagama?
Biyagama receives around 2,623 hours of sunshine per year. March is the sunniest month with 276 hours, while September is the cloudiest with just 189 hours. Overall, Biyagama enjoys abundant sunshine.
Biyagama 3-Day Forecast
Biyagama on the map
Biyagama is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Colombo
30°C (86°F) Negombo30°C (86°F) Mirissa29°C (84°F) Unawatuna29°C (84°F) Hikkaduwa29°C (84°F) Galle29°C (84°F) Kandy
29°C (84°F) Nuwara Eliya28°C (82°F) 
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