St. LuciaPhoto: DavidMPyle · CC BY 4.0Saint Lucia · North America
Best time to visit St. Lucia
Saint Lucia is famous for its pointed Piton peaks, rainforest and dream coves. St. Lucia: the driest month in the dataset is February, with around 7 typical rainy days.
Climate decision
Best travel months for St. Lucia
Joint highest scores
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Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Latest 5-year values 2021–2025
Average of the five most recent complete years compared with the 1991–2025 climate average.
January · Wet days
7 days/month
1991–2025: 14.8 days/month
-7.8 days/month · lower
March · Monthly precipitation
17.5 mm/month
1991–2025: 76.9 mm/month
-59.4 mm/month · lower
September · Mean daily maximum
30.1 °C
1991–2025: 29.1 °C
+1 °C · higher
September · Sea temperature
29.8 °C
1991–2025: 29.1 °C
+0.7 °C · higher
September: 91/150 days at or above 30 °C; highest single value 31.3 °C.
Five-year historical sample, not a weather forecast or long-term climate trend. Individual hot days can be far above the monthly mean.
Annual profile · Rainfall rhythm
St. Lucia: rainfall separates the travel months
The driest and wettest months are 11.3 rainy days apart. Average daily highs vary by 2.2 °C, so both signals matter when choosing a month.
What matters
A warmer month is not automatically the most reliable. Read the drier windows alongside sunshine, sea temperature and the activity you have in mind.
Fewest rainy days
February · 10.7
Most rainy days
August · 22
Most sunshine
April · 8 h
Warmest sea
September · 29.1 °C
Month by month
Overall suitability per month. Tap a month for details.
All climate figures compared
The table is the complete accessible data view; the charts below highlight selected patterns.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Rain mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| January | 27 | 26 | 15 | 68 | 6.3 | 75 | 6.7 | 27 | 72 |
| February | 27 | 25 | 11 | 53 | 7.1 | 74 | 6.7 | 27 | 81 |
| March | 27 | 26 | 11 | 77 | 7.8 | 75 | 6.3 | 27 | 81 |
| April | 28 | 26 | 12 | 95 | 8.0 | 76 | 6.1 | 27 | 75 |
| May | 28 | 27 | 15 | 104 | 7.8 | 77 | 6.1 | 28 | 69 |
| June | 29 | 27 | 18 | 135 | 7.3 | 79 | 6.7 | 28 | 63 |
| July | 29 | 27 | 21 | 147 | 7.6 | 79 | 6.4 | 28 | 61 |
| August | 29 | 28 | 22 | 175 | 7.7 | 79 | 5.6 | 29 | 58 |
| September | 29 | 28 | 19 | 185 | 7.4 | 78 | 4.9 | 29 | 58 |
| October | 29 | 28 | 21 | 192 | 6.8 | 79 | 5.1 | 29 | 58 |
| November | 28 | 27 | 21 | 183 | 6.2 | 79 | 5.7 | 29 | 60 |
| December | 28 | 27 | 16 | 86 | 6.0 | 76 | 6.3 | 28 | 69 |
Climate through the year
Compare temperature, rainy days, sunshine and, for coastal destinations, sea temperature month by month.
Find a place to stay
Where to stay in St. Lucia
Compare available stays, prices and cancellation terms for St. Lucia on Booking.com.
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The number is the overall climate score, not a similarity score.
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Frequently asked questions
When is the best time to visit St. Lucia?
The strongest climate months are January, February, March, April. Values are historical averages, not a forecast.
Which month has the highest average daily maximum temperature in St. Lucia?
Average daily maximum temperatures in St. Lucia are practically tied in August, September and October at around 29 °C.
When is the sea warmest at St. Lucia?
In September, at around 29 °C.