Cool
Average highs are around 12°C, so pack for cooler days.
September verdict
Joensuu, Finland in September
Weather score24Poor
Poor for holiday weather
Average highs are around 12°C, so pack for cooler days. Sunshine averages 3.7h per day, so this is not one of the brighter months. Rainfall averages 65mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
12°C
Rain
65mm
Sun
3.7h
Weather score
24
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 65mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 3.7h per day, so this is not one of the brighter months.
Map
Weather map
Compare Joensuu, Finland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September12°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
September65mm average rain
September is wetter than Joensuu's yearly average, so flexible plans matter more.
Driest monthsJanuary to June and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September3.7 hours average sun
September sits close to Joensuu's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to July
This stretch has the strongest sunshine in the monthly averages.
Weather score
September24 weather score
September scores below Joensuu's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to July
These months have the strongest weather score in the monthly averages.