The Valley (Anguilla) weather in September
September in The Valley: sweltering, rainy, with clean air — a gamble, with 36°C afternoons.
Updated September 2026 · climate normals from ERA5 reanalysis
#12 of 12 months in The Valley · #1148 of 1413 destinations to visit in September · comfort 60/100 (tier C)
- Days
- 31°C
- Nights
- 28°C
- Wet days
- 18
- Sun
- 10.7 h
- Humidity
- 81%
- Daylight
- 12 h
Traveller notes on The Valley in September
Anguilla's forum doesn't hide that September sits in peak hurricane season - hot, humid days with a real chance of passing showers or a grey, rainy stretch, and many hotels and higher-end restaurants close for the season regardless of the day-to-day forecast. That said, several posters put the odds of a clear, sunny day at roughly 80%, and one traveler's late-September week was described as brilliantly clear and hot throughout. The trade-off that comes up again and again: genuinely quiet beaches and warm, calm water in exchange for accepting real storm risk and limited services.
Other months in The Valley
Forum posters consistently name March as one of the most desirable months weather-wise - hot but rarely humid, with little rain and noticeably lower mosquito and no-see-um activity thanks to steadier wind. That same wind can be strong enough to rough up the surf at popular spots like Meads Bay, though posters note calmer alternatives sit just a 5-15 minute drive away among the island's roughly three dozen beaches. Crowds run lighter than the December-February peak while restaurants and activities (stand-up paddleboarding, tennis, golf, nature tours) stay fully open, making March a popular pick for travelers escaping northern winters without the highest-season prices or crowds.
Add your own note from The Valley's card on the map.
The Valley climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in The Valley in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 2 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for The Valley's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherThe Valley's weather peaks January–March.
September coincides with Hurricane season.
Best weatherFair weatherToughest weather
What's on in The Valley in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Sargassum season
1 May – 30 Sep · usuallyAnguilla is hit less hard than islands further south, but weed still lands on the south and northeast coasts most years - Savannah Bay, Sandy Hill Bay and Shoal Bay East are the names locals watch. How bad a season gets varies week to week rather than by the month. Source ↗
- Hazard
Hurricane season
1 Jun – 30 NovIrma made a direct Category 5 hit in September 2017, doing an estimated US$320 million in damage and knocking out the House of Assembly and the ferry terminal at Blowing Point for months. Most seasons pass without a direct strike, but the island is low and flat with nowhere to hide from one that does. Source ↗
- Closure
Off-season hotel closures
16 Aug – 15 Oct · usuallySeveral of the island's biggest names close for repairs and staff leave between mid-August and mid-October, Cap Juluca and the Four Seasons among them. Rates at what stays open are the lowest of the year, and villas and a handful of restaurants keep going regardless. Source ↗
Nearby, and something's on
Within 300 km of The Valley — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is The Valley?
The Valley in September — FAQ
- Is September a good time to visit The Valley?
- September in The Valley: sweltering, rainy, with clean air — a gamble, with 36°C afternoons. It ranks #12 of 12 months for The Valley on SeasonMap's comfort score (60/100).
- What is the weather like in The Valley in September?
- In September, The Valley averages a daily high of 30.9°C and a low of 27.8°C, with about 134.1 mm of rain over roughly 17.8 rainy days.
- What is the air quality in The Valley in September?
- The Valley has a mean US Air Quality Index of about 38 in September.
Within 300 km: Philipsburg's Sea turtle nesting around 1 Apr – 30 Nov.