Sri Lanka
Sri Lanka in May: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Sri Lanka in May is climatically mixed. The average daily high is around 29 °C, and the sea is about 29 °C. With about 26 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
54/100 · #11
Warmth
#5
Dryness
#11
Sun
#7
Sea warmth
#2
Published best categories: none
Sri Lanka · MayPhoto: Luboš Holič · CC BY-SA 3.0Climate facts
- Average high
- 29 °C
- Average low
- 26 °C
- Sea
- 29 °C
- Rainy days (est.)
- 26 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 85 %
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 | 30 | 26 | 25 | 207 | 6.9 | 82 | 2.5 | 30 | 52 |
| May (selected) | 29 | 26 | 26 | 229 | 6.0 | 85 | 4.1 | 29 | 54 |
| June | 28 | 26 | 25 | 146 | 6.0 | 86 | 4.7 | 28 | 58 |
How do the previous and next months compare?
Baseline: May (54/100)
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 | -2 | +0.7 °C | -0.4 °C | -1 | -21.9 mm | +0.9 h | -3.2 % | -1.6 m/s | +0.5 °C |
| June | +4 | -0.8 °C | -0.6 °C | -1.6 | -82.9 mm | ±0 h | +1.2 % | +0.6 m/s | -0.9 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Sri Lanka in May?
The average daily high is around 29 °C, with an average daily low of about 26 °C.
Can you swim in Sri Lanka in May?
The sea is about 29 °C (very warm).
Does it rain a lot in Sri Lanka in May?
The curated estimate is about 26 rainy days per month, not a directly measured long-term average. Total precipitation averages around 229 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Sri Lanka?
By the climate score, January, February, July and August are the strongest months for Sri Lanka. For a beach trip: January, February, July and August. May is not among them.