Tallinn weather in May
May in Tallinn: cool, a little rain — an excellent time to visit.
#4 of 12 months in Tallinn · #351 of 604 destinations to visit in May · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Tallinn climate normals — May
| Daytime high | 14°C / 57°F | 🙂 cool |
|---|---|---|
| Nighttime low | 6°C / 42°F | |
| Feels like (high) | 11°C / 52°F | |
| Rainfall | 52 mm / 2 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 62% | 💧 humid |
| Dew point | 3°C / 37°F | |
| Sunshine | 12.4 h/day | |
| Daylight | 17.1 h | |
| Wind | 21 km/h / 13 mph | |
| Snowfall | 0.5 cm / 0.2 in | |
| Air quality (US AQI) | 61 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tallinn in May — FAQ
- Is May a good time to visit Tallinn?
- May in Tallinn: cool, a little rain — an excellent time to visit. It ranks #4 of 12 months for Tallinn on SeasonMap's comfort score (80/100).
- What is the weather like in Tallinn in May?
- In May, Tallinn averages a daily high of 14°C and a low of 5.6°C, with about 51.5 mm of rain over roughly 9.8 rainy days.
- What is the air quality in Tallinn in May?
- Tallinn has a mean US Air Quality Index of about 61 in May.