Gustavia Weather in September
Saint Barthelemy · September climate averages and travel tips
Avg high29°C (85°F)
Avg low28°C (83°F)
Rainfall83 mm (3.3 in)
RatingFair 5.9/10
Gustavia in September sees daytime temperatures around 29°C (85°F), dropping to about 28°C (83°F) at night. The month is moderately rainy, with about 83 mm (3.3 in) of rain spread over 17 days, making it the second wettest month of the year. Humidity averages 78%, so it feels sticky and hotter than the thermometer suggests. You get roughly 12.1 hours of daylight and a mix of sun and cloud.
Is September a good time to visit Gustavia?
September is a fair time to visit Gustavia (5.9/10) mainly because of the rain. For better weather, go in December to April.
September weather at a glance
| Average high | 29°C (85°F) |
|---|---|
| Average low | 28°C (83°F) |
| Daily mean | 29°C (84°F) |
| Rainfall | 83 mm (3.3 in) |
| Rainy days (1 mm+) | 17 |
| Humidity | 78% |
| Cloud cover | 53% |
| Daylight | 12.1 hours |
| Est. sunshine | 6.3 hours/day |
| Wind | 17.1 km/h |
| vs August | About as warm as August, with 15 mm more rain. |
What to pack for Gustavia in September
- light, breathable clothing
- sunscreen and a hat
- an umbrella or rain jacket
- swimwear
Gustavia weather in other months
Jan26°C / 26°C21 mmExcellentFeb26°C / 25°C16 mmExcellentMar26°C / 25°C15 mmExcellentApr27°C / 26°C28 mmExcellentMay28°C / 27°C62 mmGoodJun28°C / 28°C46 mmGoodJul29°C / 28°C57 mmGoodAug29°C / 28°C68 mmFairSep29°C / 28°C83 mmFairOct29°C / 28°C116 mmFairNov28°C / 27°C80 mmGoodDec27°C / 26°C34 mmExcellent
← AugustBest time to visit GustaviaOctober →
Better weather in September nearby
- San Francisco, California24°C · 4 mm · Excellent
- Seattle, Washington21°C · 62 mm · Excellent
- Denver, Colorado29°C · 35 mm · Excellent
- Calgary20°C · 49 mm · Excellent
- Edmonton19°C · 41 mm · Excellent
- Toronto22°C · 62 mm · Excellent
Nearby in September
- Philipsburg29°C · 83 mm
- Marigot29°C · 83 mm
- The Valley29°C · 83 mm
- Basseterre29°C · 97 mm
- Saint John's29°C · 136 mm
- Plymouth29°C · 116 mm
Where else is good in September? See where to go in September.