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Tallinn in May: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Tallinn in May will be like? Take a look at our weather guide for Tallinn, based on historical data.
Check flight prices to Tallinn on Avionero:
May

Weather in Tallinn in May 2025

Good Weather
Mild
🌧️
Rainy
🌊
Cold water
Planning a trip to Tallinn in May? You are in luck! The weather is generally good, with an average maximum temperature of +57°F and approximately 9 sunny days. Just be prepared for some rain, as there are usually around 14 rainy days and 46 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • May is usually the driest month of the year in Tallinn

Average weather

☀️
+57°F
Avg. max. temperature
+27°F
Min.
+88°F
Max.
46 mm
Total precipitation
68%
Avg. humidity
3 m/s
Avg. wind
9 ☀️
Sunny Days
7 ⛅️
Cloudy
14 🌦
Rainy
Our opinion: Tallinn has good weather in May.

Average temperature in Tallinn in May

Here are the expected maximum, average and minimum temperatures in Tallinn for May based on the historical data.
Last Year
Historical Data

Going from a maximum of +72°F during the day to a minimum of +30°F during the night, the temperature in May averages around +59°F.

The average maximum temperature goes up 22% by the end of the month, compared with the beginning of the month, from +52°F to +61°F.

Is Tallinn warm or cold in May?

Tallinn is typically mild in May.

Maximum temperatures go up compared to the previous month from +46°F to +57°F. The minimum temperature also goes up from +34°F to +41°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how May is compared to other months in Tallinn:

Water temperature in Tallinn in May

Water in Tallinn in May is Cold. It varies from +34°F to +55°F, with an average of +45°F. The air temperature averaging +57°F is higher than the water temperature.

In May, water temperatures are average relative to the rest of the year:

The warmest water temperatures in Tallinn are reached in August, when the average sea temperature rises to +66°F. The coldest water temperatures are in February, with an average of +32°F.

Can you swim in Tallinn in May?

We would not recommend swimming in Tallinn in May, the water is very cold (+45°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.

Climate in Tallinn in May

Tallinn weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+46°F+57°F+64°F
Min. temperature
+16°F+27°F+37°F
Max. temperature
+73°F+88°F+90°F
Rainfall
27 mm46 mm68 mm
Wind
3 m/s3 m/s3 m/s
Avg. water temperature
+35°F+45°F+56°F
Humidity
73%68%72%
Air pressure
1013 HPa1014 HPa1011 HPa
Sunny days
797
Cloudy days
975
Rainy days
101416
Snowy days
500

May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +46°F to +57°F during the day. Prepare for more rain. Average rainfall goes from 27 mm to 46 mm. It feels drier, as humidity decreases from 73% to 68%. The average wind speed doesn’t change much during May, staying around 3 m/s. The good news is there are likely to be more sunny days in May, from 7 to 9.

June brings much the same weather, it remains good.

Wind

Wind speed in Tallinn in May based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Tallinn is gradually increasing during May, going from 3 m/s to 6 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Tallinn based on historical data.
Last Year
Historical Data
Typically, there is a 23% chance of rain on an average day in May, with total rainfall of approximately 13 mm. The maximum amount of rainfall per day is around 6 mm, which is considered light rain. On average, there are about 7 rainy days during May, so prepare to bring an umbrella.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Tallinn wettest month is August, where a typical day has a 58% chance of precipitation and 86 mm of rainfall per day. February, on the other hand, is the driest month with a mere 7% chance of precipitation and 11 mm of rainfall per day.

How was the weather last May in Tallinn?

This is the weather in Tallinn in May 2023:
1 May
☀️
+52°F
2 May
☀️
+54°F
3 May
☀️
+49°F
4 May
☀️
+42°F
5 May
☀️
+40°F
6 May
☀️
+46°F
7 May
☀️
+50°F
8 May
☀️
+54°F
9 May
☀️
+59°F
10 May
☀️
+63°F
11 May
☀️
+66°F
12 May
☀️
+67°F
13 May
☀️
+65°F
14 May
☀️
+66°F
15 May
☀️
+72°F
16 May
🌧️
+60°F
17 May
☁️
+58°F
18 May
☀️
+52°F
19 May
☀️
+57°F
20 May
☀️
+63°F
21 May
☀️
+67°F
22 May
☀️
+67°F
23 May
☀️
+69°F
24 May
☀️
+72°F
25 May
☀️
+64°F
26 May
☀️
+59°F
27 May
☀️
+56°F
28 May
☀️
+64°F
29 May
☀️
+58°F
30 May
☀️
+58°F
31 May
☀️
+61°F
In May 2023 Tallinn had 29 sunny days, 1 cloudy days, and 1 rainy days. The average maximum temperature was +59°F, with an absolute maximum of +72°F and a minimum of +41°F. The average humidity was 64%, with a maximum of 100% and a minimum of 30%. The average wind speed was 3 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change Over the Years

This is how Tallinn climate has changed over the last 43 years.

The climate in Tallinn in May has not changed that much over the last 43 years.

The average temperature was the lowest in 1987 (+44°F) and the highest in 2020 (+52°F). The driest year was 2018 with only 182 mm of rainfall, and the wettest year was 2016 with 848 mm.

FAQ

Frequently asked questions about the weather in Tallinn in May:

Is May a good time to visit Tallinn?

May is a really good time to go to Tallinn. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Tallinn.

Can you sunbathe in Tallinn in May?

May has mild temperatures in Tallinn. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Can you swim in Tallinn in May?

Swimming in Tallinn in May is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.

Is Tallinn rainy in May?

Tallinn is usually dry in May. Plan your packing around outdoor activities and exploring.

Is it sunny in Tallinn in May?

Usually, it’s not very sunny in Tallinn in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Monthly weather in Tallinn

Source of the data

For this page, we’ve looked at the typical weather in Tallinn, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.