Click on a day for an hourly weather forecast
The temperatures in Tallinn in May are quite cold with temperatures between 6°C and 13°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Tallinn during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Tallinn can expect a few days of snow in May.
Our weather forecast can give you a great sense of what weather to expect in Tallinn in May 2025.
If you’re planning to visit Tallinn in the near future, we highly recommend that you review the 14 day weather forecast for Tallinn before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -5° | 7 | 5 | 22 | 83 mm | Awful | Tallinn in January |
| February | -2° / -5° | 6 | 3 | 21 | 71 mm | Awful | Tallinn in February |
| March | 1° / -3° | 10 | 5 | 19 | 67 mm | Awful | Tallinn in March |
| April | 7° / 1° | 7 | 15 | 8 | 60 mm | Awful | Tallinn in April |
| May | 13° / 6° | 6 | 24 | 1 | 77 mm | Ok | Tallinn in May |
| June | 18° / 11° | 7 | 23 | 0 | 114 mm | Ok | Tallinn in June |
| July | 21° / 14° | 8 | 23 | 0 | 131 mm | Ok | Tallinn in July |
| August | 20° / 14° | 8 | 23 | 0 | 139 mm | Ok | Tallinn in August |
| September | 16° / 10° | 7 | 23 | 0 | 106 mm | Ok | Tallinn in September |
| October | 9° / 5° | 10 | 18 | 4 | 108 mm | Awful | Tallinn in October |
| November | 5° / 2° | 10 | 12 | 8 | 93 mm | Awful | Tallinn in November |
| December | 1° / -2° | 9 | 5 | 20 | 91 mm | Awful | Tallinn in December |