French Guiana · SpringMonth summary
French Guiana weather in May
⚠️ Fair
🌡️ Temperature min / max
75°F – 82°F
🌧 Rainy days
99% of days
☀️ Sunshine
8.0h per day on average
🌊 🌊 Season
Spring
⭐ ⭐ Weather score
6.4/10
📅 📅 Best month
September (7.7/10)
Quick decision
Should you visit French Guiana in May?
⚠️ Fair
✅ 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: Not the best window: 99% rain risk and 8.0h of sunshine. September is much safer.
By trip type
French Guiana in May by trip type
- 🏙️ 🏙️ City break / culture : ⚠️ Possible
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in May
Spring marks the start of the good season in French Guiana. Temperatures rise (28°F) and tourists have not yet arrived en masse. With 99% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. September (7.7/10) 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 | 75°F | 82°F | 87% | 0.5in | 10.0h | 7.0/10 |
| 🌧️ February | 75°F | 82°F | 88% | 0.5in | 9.2h | 7.0/10 |
| 🌦️ March | 77°F | 82°F | 86% | 0.4in | 10.5h | 7.1/10 |
| 🌧️ April | 75°F | 82°F | 95% | 0.7in | 9.1h | 7.0/10 |
| 🌧️ May | 75°F | 82°F | 99% | 0.9in | 8.0h | 6.4/10 |
| 🌧️ June | 75°F | 82°F | 98% | 0.7in | 9.7h | 7.0/10 |
| 🌦️ July | 75°F | 84°F | 91% | 0.4in | 11.1h | 7.0/10 |
| ⛅ August | 75°F | 86°F | 65% | 0.2in | 11.5h | 7.2/10 |
| 🌤️ September | 77°F | 86°F | 46% | 0.1in | 11.4h | 7.7/10 |
| 🌤️ October | 77°F | 86°F | 47% | 0.1in | 11.6h | 7.7/10 |
| ⛅ November | 77°F | 84°F | 80% | 0.3in | 11.1h | 7.1/10 |
| 🌧️ December | 75°F | 82°F | 94% | 0.5in | 9.2h | 7.0/10 |
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 May, French Guiana averages 82°F, 99% rainy days and 8.0h of sunshine per day. Overall weather score: 6.4/10.
See methodology →
Comparison
May vs September (best month)
The best month is September (score 7.7/10). Difference:
- 🌡️ Max temperature : +2°F
- 🌧 Rainy days : -53%
- ☀️ Sunshine : +3.4h/day
FAQ
FAQ — French Guiana in May
Is May a good time to visit French Guiana?
May is an acceptable time for French Guiana (score 6.4/10). Conditions are decent but not optimal — consider September (7.7/10) if possible.
Does it rain a lot in French Guiana in May?
Yes, 99% of days see rain in May. Plan some indoor activities as backup.
Accommodation
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Activities & tours
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