Turku in September: a seasonal travel plan
Turku, Finland. In september, the average daytime high is 16.3 °C and the night-time low is 8.6 °C. Plan the main route in daylight and add an extra layer for early and late hours.
Choose a month
Selected month: September
Temperatures by month
Air temperature: Turku
Contents
Weather at a glance
- Daytime high
- 16.3 °C
- Nighttime low
- 8.6 °C
- Monthly precipitation
- 57.0 mm
- Days with at least 1 mm
- 10.2
- Daylight
- 13.0 h
2015–2024 averages. Daytime temperature is the average daily maximum; nighttime temperature is the average daily minimum.
Early, middle and late month
| Period | Daytime high, °C | Nighttime low, °C | Days with at least 1 mm |
|---|---|---|---|
| Days 1–10 | 18.3 | 9.8 | 2.9 |
| Days 11–20 | 16.0 | 8.7 | 4.4 |
| From day 21 | 14.7 | 7.4 | 2.9 |
What this month is like
Turku, Finland. In september, the average daytime high is 16.3 °C and the night-time low is 8.6 °C. Plan the main route in daylight and add an extra layer for early and late hours.
There are 10.2 wet days on average, with about 57.0 mm of precipitation. Keep an indoor backup route and a compact rain jacket in your day bag.
How to plan the day
Plan the main route in daylight and add an extra layer for early and late hours.
Average daylight is 13.0 hours, so put longer routes in the brighter part of the day.
What to pack
Pack a jacket or jumper, long trousers and closed shoes. Keep an indoor backup route and a compact rain jacket in your day bag.
Precipitation and an alternative plan
There are several days with precipitation during the month. A light waterproof layer can help you continue your route outdoors.
What to pack
Pack a light jacket, a jumper, long trousers and comfortable closed shoes. A compact rain jacket takes little room in a day bag.
Compared with neighbouring months
Average daytime high: previous month — 21.2 °C, September — 16.3 °C, next month — 9.2 °C. Days with at least 1 mm of precipitation: 12.5, 10.2 and 13.3.
Things to do
Turku sits on the Aura River where it meets the Archipelago Sea, and the city is small: the market square, cathedral and riverside are all within walking distance. Ferries to Stockholm leave from here, and the archipelago islands are reachable by bus and bicycle.
Turku Castle
Turku Castle at the mouth of the Aura holds the city's history from the thirteenth century and shows medieval halls. Afterwards walk to the harbour and watch the ferries leave for Stockholm.
Luostarinmäki
Luostarinmäki preserves a quarter of wooden houses that survived the fire of 1827 and is now a crafts museum. The narrow lanes and workshops take an hour or two. The lanes are cobbled and uneven.
The Aura and the archipelago
Follow the Aura from the market square to the cathedral and, in summer, take the river ferry to the shore. For the islands, choose a ferry to Seili or Nauvo.
Where to stay
Centre and Kauppatori
The centre around Kauppatori works for a first visit: market, buses and restaurants are close. The cathedral and castle are walkable, and evenings are quiet. Buses to the airport and the harbour also stop here.
Port Arthur
Port Arthur draws people for wooden houses, cafés and calm streets. The centre is about fifteen minutes on foot, and the district stays quiet and green. Bakeries and a bookshop line the way to the centre.
Ruissalo
Ruissalo island suits nature and cycling, with oak woods and shoreline close by. The centre is a bus ride away, and there are few services. There is a campsite and a beach, and the bus starts at the market square.
Getting to and around Turku
Turku Airport lies eight kilometres north of the centre; bus 1 reaches the market square in about twenty minutes. Stockholm ferries leave from Turku Harbour, which city buses serve. The centre is walkable, and the Föli buses and a bicycle cover Ruissalo and the archipelago. In summer the ride to Ruissalo along the shore is easy by bike.
Three days in Turku
River and cathedral
Start at the market square, walk to Turku Cathedral and follow the Aura downstream. After lunch look into the art museum and end the day by the river. Museum and cathedral tickets are separate, and cafés line the river.
Castle and Ruissalo
See Turku Castle in the morning, then walk to the harbour where the Stockholm ferries dock. Take the bus to Ruissalo and follow the paths through the oak woods. Return to the city for dinner.
Luostarinmäki and the archipelago
Visit Luostarinmäki in the morning, then take the bus to the ferry terminal in the afternoon and cross to Seili. Come back towards evening. In summer ferries to Seili run several times a day.
Weather throughout the year
| Month | Daytime high, °C | Nighttime low, °C | Precipitation, mm | Days with at least 1 mm | Daylight, h |
|---|---|---|---|---|---|
| January | -2.2 | -6.6 | 64.9 | 15.4 | 6.7 |
| February | -0.9 | -6.1 | 55.9 | 10.9 | 9.0 |
| March | 2.6 | -3.7 | 49.6 | 10.2 | 11.8 |
| April | 8.1 | -0.5 | 42.3 | 9.3 | 14.6 |
| May | 14.9 | 4.7 | 43.6 | 7.6 | 17.2 |
| June | 19.8 | 10.3 | 52.4 | 8.4 | 18.9 |
| July | 21.7 | 12.8 | 64.7 | 13.1 | 18.1 |
| August | 21.2 | 12.5 | 74.4 | 12.5 | 15.7 |
| September | 16.3 | 8.6 | 57.0 | 10.2 | 13.0 |
| October | 9.2 | 3.7 | 77.8 | 13.3 | 10.2 |
| November | 3.6 | 0.1 | 70.9 | 15.0 | 7.5 |
| December | -0.0 | -3.4 | 68.5 | 14.8 | 5.9 |
Frequently asked questions
Turku: what is the temperature in September?
The average daytime high is 16.3 °C and the night-time low is 8.6 °C. Fit the main walking route into daylight hours; bring an extra layer for the evening.
How many days with precipitation are there in September?
On average, there are 10.2 days with at least 1 mm of precipitation; the monthly total is 57.0 mm. There are several days with precipitation during the month. A light waterproof layer can help you continue your route outdoors.
What should I pack for walks in September?
Pack a light jacket, a jumper, long trousers and comfortable closed shoes. A compact rain jacket takes little room in a day bag.
How does the weather change from the start to the end of the month?
Average daytime highs by part of the month: 1–10 — 18.3 °C; 11–20 — 16.0 °C; 21 to month-end — 14.7 °C.
How many daylight hours are there in September?
The average is 13.0 hours. Spread walks between the morning and afternoon, then leave the evening for dinner or indoor activities.
Is Turku worth visiting in September?
The climate suits a trip if daytime temperatures around 16.3 °C and nights around 8.6 °C work for you. Plan the main route in daylight and add an extra layer for early and late hours.
What can I do in Turku on a wet day in September?
Keep an indoor backup route and a compact rain jacket in your day bag. Keep a museum, market, café or another indoor route near your accommodation.
What should I pack for Turku in September?
Pack a jacket or jumper, long trousers and closed shoes. Average daylight is 13.0 hours.