Espoo climate
Espoo (Finland) has a warm-summer humid continental climate (Köppen Dfb). The average temperature over the year is 6 °C43 °F, and about 727 mm29 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Espoo climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | −229 | −523 | −326 | 592.3 | 25 |
| Feb | −228 | −621 | −425 | 471.8 | 24 |
| Mar | 133 | −425 | −229 | 431.7 | 25 |
| Apr | 642 | 133 | 338 | 421.7 | 10 |
| May | 1253 | 643 | 948 | 491.9 | 1 |
| Jun | 1661 | 1152 | 1457 | 652.6 | 0 |
| Jul | 2068 | 1559 | 1864 | 602.4 | 0 |
| Aug | 1967 | 1559 | 1763 | 732.9 | 0 |
| Sep | 1559 | 1152 | 1356 | 622.5 | 0 |
| Oct | 948 | 642 | 745 | 813.2 | 2 |
| Nov | 440 | 235 | 338 | 773.0 | 9 |
| Dec | 134 | −228 | −131 | 702.7 | 19 |
| Year | 2068 | −621 | 643 | 72729 | 115 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 94% | 82% | 0.3 | 6:37 |
| Feb | 94% | 79% | 0.8 | 9:00 |
| Mar | 91% | 69% | 2.2 | 11:34 |
| Apr | 85% | 67% | 3.8 | 14:29 |
| May | 81% | 62% | 5.2 | 17:09 |
| Jun | 80% | 66% | 5.4 | 18:53 |
| Jul | 81% | 64% | 5.2 | 18:08 |
| Aug | 80% | 63% | 4.0 | 15:38 |
| Sep | 84% | 67% | 2.4 | 12:44 |
| Oct | 87% | 78% | 1.1 | 9:57 |
| Nov | 91% | 85% | 0.3 | 7:19 |
| Dec | 93% | 84% | 0.1 | 5:51 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Espoo is like
The warmest month is July, with an average high of 20 °C68 °F and a low of 15 °C59 °F. The coldest is February, when highs average −2 °C28 °F and lows −6 °C21 °F. Seasons are strongly marked: the warmest month is on average 21.6 °C38.9 °F warmer than the coldest.
Annual precipitation is moderate at about 727 mm29 in. Rain is spread fairly evenly through the year. The wettest month is October (81 mm3.2 in), the driest is April (42 mm1.7 in).
Relative humidity ranges from 80% in August to 94% in February. The clearest skies (lowest average cloud amount, 62%) are typical of May. Average wind speed near the ground ranges from 9 km/h (6 mph) in May to 16 km/h (10 mph) in December. Daylight lasts from about 5.8 hours in December to 18.9 hours in June.
A lasting snow cover is typical in December–March, when the average snow depth in the reanalysis exceeds 10 cm (deepest in February, about 19 cm).
Best time to visit Espoo
Based on these averages, the most comfortable months for sightseeing and outdoor activities are July and August: average highs of 19 °C67 °F to 20 °C68 °F with 60 mm2.4 in to 73 mm2.9 in of precipitation per month.
The most challenging month is February, which is cold, with average highs of −2 °C28 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Espoo
- Winter (December–February) — highs −228 to 1 °C34 °F, lows −621 to −2 °C28 °F, about 58 mm2.3 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 133 to 12 °C53 °F, lows −425 to 6 °C43 °F, about 45 mm1.8 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Summer (June–August) — highs 1661 to 20 °C68 °F, lows 1152 to 15 °C59 °F, about 66 mm2.6 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs 440 to 15 °C59 °F, lows 235 to 11 °C52 °F, about 74 mm2.9 in of precipitation a month. Pack a warm coat, layers and closed shoes.
How Espoo compares
Compared with Helsinki, about 16 km to the east, Espoo has practically the same average temperature and receives a similar amount of precipitation.
Of the 9 places in Finland covered by World Climates, Espoo is the 2nd warmest by annual mean temperature and the 7th wettest by annual precipitation. See all of them on the Finland climate page.
Places in other countries with the most similar temperature and rainfall pattern: Tallinn (Estonia, Dfb), Sollentuna (Sweden, Dfb) and Stockholm (Sweden, Dfb).
Nearby places
- Helsinki 16 km · 6 °C43 °F · 712 mm28 in
- Vantaa 24 km · 5 °C42 °F · 733 mm29 in
- Tallinn 86 km · 6 °C43 °F · 685 mm27 in
- Lahti 103 km · 4 °C40 °F · 746 mm29 in
- Turku 134 km · 6 °C42 °F · 723 mm28 in
- Tampere 151 km · 4 °C40 °F · 776 mm31 in
- Jyväskylä 234 km · 4 °C39 °F · 807 mm32 in
- Mariehamn 261 km · 7 °C45 °F · 649 mm26 in
Frequently asked questions
What is the warmest month in Espoo?
July is the warmest month in Espoo, with an average high of 20 °C (68 °F) and an average low of 15 °C (59 °F).
What is the coldest month in Espoo?
February is the coldest month, with an average high of -2 °C (28 °F) and an average low of -6 °C (21 °F).
When does it rain the most in Espoo?
October is the wettest month with about 81 mm (3.2 in) of precipitation; April is the driest with about 42 mm (1.7 in).
What is the best time to visit Espoo?
Judging by long-term averages, the most comfortable months are July and August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.