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Ambalantota weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Ambalantota?
For a warm holiday, the best week has been 31 January – 6 February (Weather Index 88). Favourable start dates for a 7-day trip run from 14 January to 10 February. April is warmest (33°C), February is driest and February to April and June to August have the most sun.
- Warmest
- April 33°C
- Coolest
- November and December 30°C
- Driest
- February 19% rain-day chance
- Wettest
- November 74% rain-day chance
- Sunniest
- February to April and June to August 11 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Ambalantota
Ambalantota historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 30.6 | 22.9 | 27.4 | 8.5 | 92.2 | 10.2 |
| February | 31.9 | 23.3 | 18.9 | 5.3 | 46.5 | 11.0 |
| March | 32.4 | 24.1 | 39.4 | 12.2 | 71.1 | 10.8 |
| April | 32.8 | 25.2 | 61.0 | 18.3 | 102.4 | 10.8 |
| May | 32.0 | 25.9 | 59.4 | 18.4 | 137.8 | 10.0 |
| June | 32.1 | 26.0 | 31.7 | 9.5 | 31.6 | 11.0 |
| July | 32.5 | 26.0 | 21.6 | 6.7 | 29.1 | 10.9 |
| August | 32.3 | 25.7 | 24.8 | 7.7 | 41.8 | 10.6 |
| September | 31.8 | 25.3 | 42.3 | 12.7 | 68.9 | 10.4 |
| October | 31.3 | 24.8 | 59.4 | 18.4 | 142.5 | 9.6 |
| November | 30.2 | 24.1 | 73.7 | 22.1 | 242.3 | 8.8 |
| December | 30.1 | 23.5 | 45.2 | 14.0 | 128.2 | 9.6 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.