Air Guitar World Championship Finland
This is something you might want to add to your bucket list. August is also the perfect time to visit Finland. The days are long and the temperature is amazing.
Lohja Weather in September
September in Lohja averages 16°C (61°F) during the day and 9°C (48°F) at night. Quite a bit of rainfall is typical this month, with around 62 mm (2.4 in) on average. An umbrella is a good idea.
Rainfall in Lohja in September
Historically, September sees about 19 days of rain, with a monthly average of 62 mm (2.4 in). Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Lohja in September
Expect highs of 16°C (61°F) in Lohja in September, with nights dropping to around 9°C (48°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Lohja in September
The area enjoys a balanced 151 hours of sunlight, ensuring it's neither too overcast nor too sunny.For Lohja itself, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Lohja Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
16°C (61°F)
Chance of Rain
62%
Precipitation
62 mm (2.4 in)
Rainy days
19 days
Humidity
84% *
Sunshine
151 hours *
Percentage Sunshine
*
* Data from: Helsinki, Finland (50 KM, 31 Miles).
Lohja Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Lohja - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lohja typically drop from around 17°C (63°F) at the start of September to approximately 12°C (54°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 10°C (50°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Lohja in September
Browse day-by-day weather records for Lohja spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lohja historical weather extremes in September
The extremes listed below come from historical weather data collected in Lohja from 1976 through 2025.
- On September 3, 2002, temperatures climbed to 25°C (77°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 5°C (41°F), recorded on September 27, 1986.
- Nighttime temperatures dropped to -6°C (21°F) on September 30, 1993, marking the coldest September night on record.
Best Places in Finland in September
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Lohja in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Lohja in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling6/10 -
Walking6/10 -
Barbeque6/10 -
Camping4/10 -
Outdoor sports10/10
Lohja 3-Day Forecast
More climate data for Lohja
Temperature Rainfall Sunshine Humidity
See the full Lohja climate overview or explore weather in Finland.
Popular in September
Where to go in September - average daytime high across popular destinations.
Helsinki
16°C (61°F) Turku17°C (63°F) Tampere
15°C (59°F) Vuokatti
13°C (55°F) Rovaniemi13°C (55°F) Äkäslompolo12°C (54°F) Ruka12°C (54°F) Levi12°C (54°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Air Guitar World Championship Finland
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