Saint Lucia
St. Lucia in May: weather, sea & travel advice
This month's data profile
Rain shapes the decision
St. Lucia in May is climatically well suited to beach holidays and family holidays. The average daily high is around 28 °C, and the sea is about 28 °C. With about 15 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
69/100 · #5
Warmth
#6
Dryness
#4
Sun
#2
Sea warmth
#8
Published best categories: none
St. Lucia · MayPhoto: DavidMPyle · CC BY 4.0Climate facts
- Average high
- 28 °C
- Average low
- 27 °C
- Sea
- 28 °C
- Rainy days (est.)
- 15 rainy days (est.)
- Sun (est.)
- 8 h/day
- Humidity
- 77 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| April | 28 | 26 | 12 | 95 | 8.0 | 76 | 6.1 | 27 | 75 |
| May (selected) | 28 | 27 | 15 | 104 | 7.8 | 77 | 6.1 | 28 | 69 |
| June | 29 | 27 | 18 | 135 | 7.3 | 79 | 6.7 | 28 | 63 |
How do the previous and next months compare?
Baseline: May (69/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| April | +6 | -0.6 °C | -0.8 °C | -2.3 | -9.4 mm | +0.2 h | -1.3 % | ±0 m/s | -0.5 °C |
| June | -6 | +0.1 °C | +0.3 °C | +3.8 | +31.2 mm | -0.5 h | +1.4 % | +0.5 m/s | +0.1 °C |
All twelve months in context
Find a place to stay
Where to stay in St. Lucia
Compare available stays, prices and cancellation terms for St. Lucia on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is St. Lucia in May?
The average daily high is around 28 °C, with an average daily low of about 27 °C.
Can you swim in St. Lucia in May?
The sea is about 28 °C (very warm).
Does it rain a lot in St. Lucia in May?
The curated estimate is about 15 rainy days per month, not a directly measured long-term average. Total precipitation averages around 104 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit St. Lucia?
By the climate score, January, February, March and April are the strongest months for St. Lucia. For a beach trip: January, February, March and April. May is not among them.