When to go · Grand Case
Grand Case in September
Avoid month. Listed as a month to avoid: Jun–Nov (rainier, hotter).
Key facts
- Verdict
- Avoid
- Temperature
- 32°C (90°F)90°F (32°C) / 26°C (79°F)79°F (26°C)
- average high / low
- Rain days
- 9
- Crowds
- Low
- Saint-Martin overall
- Prices
- Low
- Saint-Martin overall
Verdict
Listed as a month to avoid: Jun–Nov (rainier, hotter).
Is another month better than September?
September is rated avoid. These months rate higher:
Weather in September
- Grand CaseHighs around 32 °C (90 °F), lows around 26 °C (79 °F), rain on about 9 daysHighs around 90 °F (32 °C), lows around 79 °F (26 °C), rain on about 9 days
- Whole island, Saint-Martin · Marigot, Grand Case, Orient Bay, Philipsburgstorm or typhoon risk
Dry, breezy season December–April; hot and humid summer; Irma (2017) showed the risk of the August–October peak.
Crowds and prices
- Crowds · Saint-Martin overall
- Low
- Prices · Saint-Martin overall
- Low
Saint-Martin overall: Peak hurricane month; many restaurants close.
Compare two months
Weather, crowds and prices for any two months in Grand Case, side by side.
Verdict
Sep: Avoid
Jan: Great (better)
Daytime high
Sep: 32 °C (90 °F)90 °F (32 °C)
Jan: 28 °C (82 °F)82 °F (28 °C)
Night low
Sep: 26 °C (79 °F)79 °F (26 °C)
Jan: 23 °C (73 °F)73 °F (23 °C)
Rain days
Sep: 9
Jan: 5 (better)
Crowds
Sep: Low
Jan: High
Prices
Sep: Low
Jan: High
Festivals listed
Sep: 0
Jan: 1
September: Listed as a month to avoid: Jun–Nov (rainier, hotter).
January: Inside Grand Case's best window: Dec–May.
Grand Case: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen
- A rain jacket or umbrella and shoes that dry fast
- A spare day in the plan: storms can cancel flights and ferries