St. Lucia · September
Low seasonSt. Lucia · North America
Max Temp
31.4°C
Min Temp
25.9°C
Sunshine
7.7 h/day
Rain Days
10 days
Water Temp
29.2°C
Rainfall
143.5 mm
Humidity
79%
Avg Temp
28.6°C
Off-season — lowest travel prices with still acceptable climate.
September in St. Lucia is generally manageable, but with 10 rain days it's not a reliably sunny month. Better conditions can be found in February, March, April, and May.
Daytime highs reach 31°C with a daily average of 29°C — nights stay warm at 26°C. The sun shines an average of 8 hours per day; there are 10 rain days with 144 mm total. The water is a warm 29°C — perfect for snorkelling and swimming.
A jacket for cool evenings should not be left behind. Sightseeing and excursions can be enjoyed at this time of year without the heat.
Packing list for St. Lucia in September
- Leichte Sommersachen
- Badezeug und Strandtuch
- Sonnencreme LSF 50
- Sonnenbrille
- Sonnenhut
- Leichter Regenschirm oder Regenponcho
- Insektenschutzmittel
- Reiseapotheke
Frequently Asked Questions
- Is September a good time to visit St. Lucia?
- September is not an optimal month for St. Lucia (Score: 69/100), but it is manageable. For better conditions, consider February, March, April, and May.
- How warm is it in St. Lucia in September?
- In September, St. Lucia sees daily highs of 31°C. Nights cool to 26°C, with a daily average of 29°C.
- How much rain falls in St. Lucia in September?
- In September, St. Lucia receives an average of 144 mm of rain over 10 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does St. Lucia get in September?
- St. Lucia averages 8 sunshine hours per day in September — close to the annual average.
- How warm is the water in St. Lucia in September?
- Water temperature in St. Lucia in September averages 29°C — ideal for swimming and snorkelling.
