Estonia
Tallinn in May: weather, sea & travel advice
This month's data profile
Clear transition month
Tallinn in May is climatically mixed. The average daily high is around 12 °C, and the sea is about 6 °C. With about 9 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
42/100 · #5
Warmth
#5
Dryness
#1
Sun
#3
Sea warmth
#7
Published best categories: none
Tallinn · MayPhoto: Jorge Láscar · CC BY 2.0Climate facts
- Average high
- 12 °C
- Average low
- 6 °C
- Sea
- 6 °C
- Rainy days (est.)
- 9 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 79 %
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 | 6 | 1 | 10 | 44 | 4.8 | 85 | 4.5 | 2 | 33 |
| May (selected) | 12 | 6 | 9 | 48 | 6.8 | 79 | 4.1 | 6 | 42 |
| June | 17 | 11 | 12 | 68 | 7.2 | 77 | 4.2 | 12 | 51 |
How do the previous and next months compare?
Baseline: May (42/100)
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 | -9 | -5.8 °C | -5 °C | +0.3 | -3.6 mm | -2 h | +5.9 % | +0.4 m/s | -4 °C |
| June | +9 | +4.9 °C | +5.4 °C | +2.2 | +20.7 mm | +0.4 h | -1.4 % | +0.1 m/s | +5.5 °C |
All twelve months in context
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Frequently asked questions
How warm is Tallinn in May?
The average daily high is around 12 °C, with an average daily low of about 6 °C.
Can you swim in Tallinn in May?
The sea is about 6 °C (cold).
Does it rain a lot in Tallinn in May?
The curated estimate is about 9 rainy days per month, not a directly measured long-term average. Total precipitation averages around 48 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Tallinn?
By the climate score, July are the strongest months for Tallinn. May is not among them.