Weather on September 11 in Helsinki

Historical weather data for September 11 in Helsinki, Finland

Avg High16°C (61°F)
Avg Low11°C (51°F)
Warmest202519°C
Coldest19738°C

Based on 55 years of data from HELSINKI RAUTATIENTORI

About This Date

September 11th in Helsinki, Finland typically brings mild fall weather, with average highs around 16°C and lows near 11°C. Over 55 years of records, the warmest September 11th was in 2025 (19°C average), while the coldest was 1973 (8°C) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 42% of September 11th dates historically, with the wettest September 11th recording 2.36" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.

The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.

Planning for September 11th in Helsinki? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecip
202522°C (71°F)17°C (63°F)0"
202419°C (66°F)14°C (58°F)0.23"
202319°C (66°F)16°C (61°F)0"
202218°C (64°F)6°C (43°F)0"
202117°C (63°F)13°C (55°F)0.22"
202016°C (61°F)10°C (50°F)0.03"
201921°C (69°F)15°C (59°F)0.43"
201818°C (65°F)13°C (56°F)2.36"
201717°C (62°F)13°C (55°F)1.66"
201618°C (65°F)13°C (55°F)0.01"
201518°C (64°F)12°C (53°F)--
201419°C (66°F)13°C (56°F)--
201319°C (67°F)16°C (60°F)--
201219°C (66°F)14°C (58°F)--
201119°C (66°F)11°C (52°F)--
201016°C (60°F)13°C (55°F)--
200918°C (64°F)8°C (46°F)0"
200812°C (53°F)6°C (43°F)0"
200715°C (59°F)7°C (44°F)0.01"
200621°C (70°F)10°C (50°F)0"
200516°C (60°F)6°C (42°F)0"
200418°C (64°F)12°C (53°F)0"
200314°C (58°F)12°C (54°F)0"
200217°C (63°F)8°C (46°F)0"
200115°C (59°F)12°C (54°F)0"
200016°C (60°F)8°C (47°F)0"
199919°C (66°F)9°C (49°F)0"
199818°C (64°F)16°C (60°F)0"
199718°C (64°F)12°C (53°F)0"
199612°C (53°F)7°C (45°F)0.09"
199513°C (56°F)10°C (50°F)0.12"
199414°C (58°F)12°C (54°F)0.78"
199312°C (54°F)3°C (37°F)0"
199217°C (62°F)8°C (47°F)0"
199114°C (58°F)11°C (51°F)0"
199012°C (53°F)7°C (44°F)0"
198914°C (58°F)6°C (42°F)0"
198817°C (62°F)14°C (57°F)0.54"
198714°C (58°F)12°C (53°F)0.48"
198613°C (56°F)11°C (51°F)0.81"
198514°C (58°F)7°C (44°F)0.04"
198416°C (60°F)12°C (54°F)0.04"
198314°C (57°F)10°C (50°F)0"
198216°C (60°F)8°C (47°F)0.01"
198116°C (60°F)9°C (49°F)0"
198016°C (60°F)12°C (54°F)0"
197916°C (60°F)12°C (54°F)1.85"
197815°C (59°F)11°C (52°F)1.8"
197712°C (54°F)3°C (38°F)0.01"
197616°C (60°F)11°C (51°F)0"
197518°C (64°F)14°C (57°F)0.03"
197416°C (61°F)10°C (50°F)0"
197312°C (53°F)4°C (39°F)0.16"
197221°C (69°F)15°C (59°F)0"
197112°C (53°F)9°C (48°F)0.01"

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