Saint Martin · AutumnMonth summary
Saint Martin weather in September
✅ Good
🌡️ Temperature min / max
25°C – 27°C
🌧 Rainy days
57% of days
☀️ Sunshine
11.9h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.6/10
📅 📅 Best month
June (8.4/10)
Quick decision
Should you visit Saint Martin in September?
✅ Good
✅ Yes if: you're willing to accept showers in exchange for lower prices and fewer tourists.
❌ No if: you're planning 100% outdoor activities — rain is frequent.
Our take: September is a good time to visit Saint Martin. June remains slightly better (+0.8 pts).
By trip type
Saint Martin in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in September
🎯 Ideal beach temperature (27°C) — crowds still moderate Autumn in Saint Martin is often underrated: 27°C, golden light and declining crowds. An interesting window. With 57% of rainy days, always have indoor alternatives planned. A good balance between weather and crowds, even if June (8.4/10) remains theoretically better.
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All months for Saint Martin
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 23°C | 24°C | 40% | 1.1 | 10.9h | 7.8/10 |
| 🌤️ February | 23°C | 24°C | 37% | 1.6 | 11.0h | 7.8/10 |
| 🌤️ March | 23°C | 24°C | 27% | 0.7 | 11.4h | 8.2/10 |
| 🌤️ April | 23°C | 24°C | 38% | 1.4 | 12.0h | 8.0/10 |
| 🌤️ May | 24°C | 25°C | 36% | 1.8 | 12.1h | 8.1/10 |
| 🌤️ June | 25°C | 26°C | 33% | 1.4 | 12.3h | 8.4/10 |
| 🌤️ July | 25°C | 26°C | 53% | 2.3 | 12.3h | 7.8/10 |
| 🌤️ August | 25°C | 27°C | 51% | 2.9 | 12.0h | 7.9/10 |
| 🌤️ September | 25°C | 27°C | 57% | 4.4 | 11.9h | 7.6/10 |
| 🌤️ October | 25°C | 27°C | 57% | 3.9 | 11.4h | 7.6/10 |
| 🌤️ November | 24°C | 26°C | 55% | 4.0 | 10.6h | 7.5/10 |
| 🌤️ December | 24°C | 25°C | 43% | 1.4 | 10.5h | 7.8/10 |
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, Saint Martin averages 27°C, 57% rainy days and 11.9h of sunshine per day. Overall weather score: 7.6/10.
See methodology →
Comparison
September vs June (best month)
The best month is June (score 8.4/10). Difference:
- 🌡️ Max temperature : -1°C
- 🌧 Rainy days : -24%
- ☀️ Sunshine : +0.4h/day
FAQ
FAQ — Saint Martin in September
Is September a good time to visit Saint Martin?
September is an excellent time to visit Saint Martin (score 7.6/10). With 27°C, 11.9h of sunshine and 57% rain, conditions are very favourable.
Does it rain a lot in Saint Martin in September?
Yes, 57% of days see rain in September. Plan some indoor activities as backup.
Accommodation
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Activities & tours
Activities and tours in Saint Martin
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