Best time to visit Turku
Month-by-month weather averages for Turku.
Turku, Southwest Finland, Finland
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | -1.6 °C / 29 °F | -6.3 °C / 21 °F | 51 mm / 2 in | neither best nor good |
| February | -1.2 °C / 30 °F | -6.7 °C / 20 °F | 38 mm / 1.5 in | neither best nor good |
| March | 3 °C / 37 °F | -4.4 °C / 24 °F | 34 mm / 1.3 in | neither best nor good |
| April | 8.8 °C / 48 °F | 0 °C / 32 °F | 35 mm / 1.4 in | neither best nor good |
| May | 15.1 °C / 59 °F | 5.1 °C / 41 °F | 43 mm / 1.7 in | good month |
| June | 19.5 °C / 67 °F | 10 °C / 50 °F | 64 mm / 2.5 in | good month |
| July | 21.9 °C / 71 °F | 13.1 °C / 56 °F | 86 mm / 3.4 in | good month |
| August | 20.5 °C / 69 °F | 12.2 °C / 54 °F | 90 mm / 3.6 in | good month |
| September | 15.8 °C / 60 °F | 8.5 °C / 47 °F | 61 mm / 2.4 in | good month |
| October | 9.3 °C / 49 °F | 3.7 °C / 39 °F | 64 mm / 2.5 in | neither best nor good |
| November | 4.5 °C / 40 °F | 0.8 °C / 33 °F | 55 mm / 2.2 in | neither best nor good |
| December | 1.2 °C / 34 °F | -2.8 °C / 27 °F | 59 mm / 2.3 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: good
- JJune: good
- JJuly: good
- AAugust: good
- SSeptember: good
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Good
- May–September
Turku's short summer from May to September is the only comfortable stretch for exploring outdoors, with long bright days offset by frequent, often afternoon showers from June through September; the rest of the year is cold, dark and humid, ruling it out for outdoor sightseeing.
Why these months
May · good
In its favour: precipitation 43 mm / 1.7 in, share of daylight that is sunny 77%, days with heavy rain 0.7 days, average daily high 15.1 °C / 59 °F, wet days 9.4 days, relative humidity 67%, average daily low 5.1 °C / 41 °F.
Against: feels like (high) 12.5 °C / 55 °F.
Also on: Football season (Veikkausliiga), Vappu (Walpurgis Night and May Day).
Watch out for: Ascension Day closures.
June · good
In its favour: feels like (high) 18 °C / 64 °F, average daily high 19.5 °C / 67 °F, share of daylight that is sunny 76%, average daily low 10 °C / 50 °F, relative humidity 69%.
Against: wet days 10.7 days, days with heavy rain 1.8 days, precipitation 64 mm / 2.5 in.
Also on: Football season (Veikkausliiga), Midsummer (Juhannus) bonfires, New Potato Festival, Seikkisrock.
Watch out for: Midsummer (Juhannus) exodus, Summer holiday exodus.
July · good
In its favour: feels like (high) 21.4 °C / 71 °F, average daily high 21.9 °C / 71 °F, share of daylight that is sunny 79%, average daily low 13.1 °C / 56 °F, relative humidity 74%.
Against: wet days 12.9 days, precipitation 86 mm / 3.4 in, days with heavy rain 2.5 days.
Also on: Football season (Veikkausliiga), Ruisrock, Turku Modern, Wild bilberry picking.
Watch out for: Summer holiday exodus.
August · good
In its favour: feels like (high) 19.7 °C / 67 °F, average daily high 20.5 °C / 69 °F, share of daylight that is sunny 76%, average daily low 12.2 °C / 54 °F.
Against: wet days 13.9 days, relative humidity 79%, precipitation 90 mm / 3.6 in, days with heavy rain 2.5 days.
Also on: Football season (Veikkausliiga), The Night of Arts, Turku Day, Wild bilberry picking.
Watch out for: Summer holiday exodus.
September · good
In its favour: share of daylight that is sunny 67%, feels like (high) 14 °C / 57 °F, average daily high 15.8 °C / 60 °F, average daily low 8.5 °C / 47 °F.
Against: relative humidity 84%, wet days 9.9 days, days with heavy rain 1.6 days, precipitation 61 mm / 2.4 in.
Also on: Football season (Veikkausliiga), Ruissalo races, Turku Day.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Klövsjö / Storhogna, 485 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | -6.1 °C | -5.6 °C | -1.3 °C | 5 °C | 12.5 °C | 18 °C | 21.4 °C | 19.7 °C | 14 °C | 6.4 °C | 1 °C | -3.1 °C |
| Days with heavy rain | 1.1 days | 0.7 days | 0.5 days | 0.3 days | 0.7 days | 1.8 days | 2.5 days | 2.5 days | 1.6 days | 1.6 days | 0.8 days | 0.8 days |
| Time rain usually falls | 10 am | 3 pm | 10 pm | 2 pm | 5 pm | 3 pm | 4 pm | 5 pm | 2 pm | 10 pm | 10 am | 11 pm |
| Sunshine per day | 2 h | 3.8 h | 7.4 h | 10.7 h | 13.4 h | 14.3 h | 14.2 h | 11.9 h | 8.6 h | 5.2 h | 2.2 h | 1.5 h |
| Relative humidity | 90% | 89% | 81% | 73% | 67% | 69% | 74% | 79% | 84% | 87% | 91% | 91% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 3.5 µg/m³ | 4.6 µg/m³ | 6.4 µg/m³ | 7.4 µg/m³ | 7.3 µg/m³ | 8.7 µg/m³ | 7.8 µg/m³ | 6.5 µg/m³ | 6 µg/m³ | 4.2 µg/m³ | 3.2 µg/m³ | 3.5 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 5.8 µg/m³ | 7.8 µg/m³ | 10.2 µg/m³ | 12 µg/m³ | 11.5 µg/m³ | 14.2 µg/m³ | 11.8 µg/m³ | 9.7 µg/m³ | 9 µg/m³ | 6.6 µg/m³ | 5.5 µg/m³ | 5.7 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.
Events and seasons
What the weather records cannot show. A major event can lift a month to good or best. The warnings are there to help you plan, and never count against a month.
Reasons to go
- Laskiainen (sledding)
February and March, dates vary from year to year
- Easter church services and concerts
March and April, dates vary from year to year
- Easter at Cloister Hill
March and April, dates vary from year to year
- Archipelago Market
April
- Vappu (Walpurgis Night and May Day)
30 April–1 May
- Football season (Veikkausliiga)
April, May, June, July, August, September and October
- New Potato Festival
June
- Midsummer (Juhannus) bonfires
20–26 June, dates vary from year to year
- Seikkisrock
1–10 June
- Ruisrock
July
- Turku Modern
July
- Wild bilberry picking
July and August
- The Night of Arts
10–20 August
- Turku Day
August and September, dates vary from year to year
- Ruissalo races
21–30 September
- Herring Market
October
- Turku Food and Wine Fair
October
- Christmas season start (lights)
November and December, dates vary from year to year
- Christmas Market at the Old Great Square
November and December, dates vary from year to year
- Ecumenical plea for peace
November and December, dates vary from year to year
- Christmas light path
November and December, dates vary from year to year
- Student choir Christmas concerts
November and December, dates vary from year to year
- Independence Day (Turku)
6 December
- St Lucia's Day
13 December
- Turku's Christmas Peace declaration
24 December
- New Year's Eve fireworks
31 December
Worth knowing before you go
- New Year's Day closures
1 January
- Epiphany closures
6 January
- Good Friday and Easter Monday closures
March and April, dates vary from year to year
- Ascension Day closures
April and May, dates vary from year to year
- Midsummer (Juhannus) exodus
20–26 June, dates vary from year to year
- Summer holiday exodus
June, July and August, dates vary from year to year
- Christmas closures
24–26 December