Sri Lanka · AutumnMonth summary
Sri Lanka weather in September
✅ Good
🌡️ Temperature min / max
75°F – 90°F
🌧 Rainy days
49% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.3/10
📅 📅 Best month
February (7.8/10)
Quick decision
Should you visit Sri Lanka in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 32°F.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Favourable conditions in September (7.3/10). February scores higher but the gap is small.
By trip type
Sri Lanka in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in September
Autumn in Sri Lanka is often underrated: 32°F, golden light and declining crowds. An interesting window. With 49% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. February (7.8/10) is significantly better if possible.
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Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 70°F | 82°F | 56% | 0.2in | 10.1h | 7.5/10 |
| 🌤️ February | 72°F | 84°F | 45% | 0.1in | 10.8h | 7.8/10 |
| 🌤️ March | 72°F | 88°F | 43% | 0.1in | 11.1h | 7.5/10 |
| 🌤️ April | 75°F | 91°F | 58% | 0.2in | 11.0h | 7.0/10 |
| 🌤️ May | 77°F | 90°F | 50% | 0.2in | 10.9h | 7.2/10 |
| 🌤️ June | 77°F | 90°F | 26% | 0.0in | 11.0h | 7.8/10 |
| 🌤️ July | 77°F | 90°F | 33% | 0.0in | 11.0h | 7.6/10 |
| 🌤️ August | 75°F | 90°F | 39% | 0.1in | 11.0h | 7.5/10 |
| 🌤️ September | 75°F | 90°F | 49% | 0.1in | 11.0h | 7.3/10 |
| ⛅ October | 73°F | 86°F | 74% | 0.3in | 9.8h | 7.0/10 |
| 🌧️ November | 72°F | 84°F | 84% | 0.5in | 8.0h | 7.0/10 |
| ⛅ December | 72°F | 82°F | 72% | 0.3in | 9.6h | 7.2/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Sri Lanka averages 90°F, 49% rainy days and 11.0h of sunshine per day. Overall weather score: 7.3/10.
See methodology →
Comparison
September vs February (best month)
The best month is February (score 7.8/10). Difference:
- 🌡️ Max temperature : -3°F
- 🌧 Rainy days : -4%
- ☀️ Sunshine : -0.2h/day
FAQ
FAQ — Sri Lanka in September
Is September a good time to visit Sri Lanka?
September is an acceptable time for Sri Lanka (score 7.3/10). Conditions are decent but not optimal — consider February (7.8/10) if possible.
What to do in Sri Lanka in September?
With 90°F max and 11.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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