The Valley Weather in September
September in The Valley brings high temperatures around 30°C (86°F) during the day, dropping to 27°C (81°F) at night, with quite a bit of rainfall expected, averaging around 134 mm (5.3 in) for the month.
Rainfall in The Valley in September
Historically, September sees about 19 days of rain, with a monthly average of 134 mm (5.3 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in The Valley in September
Expect highs of 30°C (86°F) in The Valley in September, with nights dropping to around 27°C (81°F). This kind of day-to-night contrast is typical for this time of year. With lows of 27°C (81°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.
Sunshine in The Valley in September
The month enjoys around 232 hours of sunshine, creating mostly sunny days with good weather conditions.
Wind Speed in The Valley in September
September has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.
Average water temperature in September
The water is 29°C (84°F) — very warm by most standards. Comfortable to swim in, but not particularly refreshing if you're looking to cool off.September in The Valley has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Anguilla, check out our The Valley's climate page.
The Valley Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Water Temperature
29°C (84°F) *
Chance of Rain
62%
Precipitation
134 mm (5.3 in)
Rainy days
19 days
Humidity
78% *
Windspeed
5 m/s (10 knots) *
Sunshine
232 hours *
Percentage Sunshine
61% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in The Valley typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Historical weather for The Valley in September
Browse day-by-day weather records for The Valley spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The Valley historical weather extremes in September
Based on weather observations in The Valley between 1990 and 2025, these are the recorded extremes during September.
- On September 15, 2006, temperatures climbed to 38°C (100°F), marking the warmest September day on record.
- On September 4, 2009, The Valley saw its coldest September day with temperatures maxing out at 27°C (81°F).
- Nighttime temperatures dropped to 21°C (70°F) on September 25, 2019, marking the coldest September night on record.
Best Places in Anguilla in September
Find out more about the weather in Anguilla and which places have the best travel conditions in this month. See all of Anguilla in September →
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What to Wear in The Valley in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 29°C (84°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in The Valley in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Anguilla, check out our The Valley's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full The Valley climate overview or explore weather in Anguilla.
