Galle weather in September
September in Galle: warm, soaked, with clean air — fine if you can take 28 rainy days.
#10 of 12 months in Galle · #692 of 897 destinations to visit in September · comfort 68/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
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Galle climate normals — September
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Rainfall | 304 mm / 12 in | ⛈ soaked |
| Rainy days | 28 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 12.2 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Galle in September — FAQ
- Is September a good time to visit Galle?
- September in Galle: warm, soaked, with clean air — fine if you can take 28 rainy days. It ranks #10 of 12 months for Galle on SeasonMap's comfort score (68/100).
- What is the weather like in Galle in September?
- In September, Galle averages a daily high of 27.9°C and a low of 24.9°C, with about 304.3 mm of rain over roughly 28.4 rainy days.
- What is the air quality in Galle in September?
- Galle has a mean US Air Quality Index of about 40 in September.