Weather on August 21 in Helsinki

Historical weather data for August 21 in Helsinki, Finland

Avg High19°C (67°F)
Avg Low13°C (55°F)
Warmest202222°C
Coldest197711°C

Based on 55 years of data from HELSINKI RAUTATIENTORI

About This Date

August 21st in Helsinki, Finland typically brings mild summer weather, with average highs around 19°C and lows near 13°C. Over 55 years of records, the warmest August 21st was in 2022 (22°C average), while the coldest was 1977 (11°C) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 45% of August 21st dates historically, with the wettest August 21st recording 3.68" of rain. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.

The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.

Planning for August 21st in Helsinki? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecip
202516°C (61°F)7°C (45°F)0"
202422°C (71°F)16°C (61°F)0.1"
202321°C (70°F)12°C (53°F)0"
202223°C (74°F)19°C (67°F)0.04"
202118°C (65°F)11°C (52°F)2.59"
202024°C (75°F)16°C (60°F)0.11"
201919°C (67°F)16°C (61°F)0"
201819°C (67°F)11°C (52°F)0"
201718°C (65°F)15°C (59°F)0"
201623°C (73°F)14°C (58°F)0.01"
201522°C (72°F)14°C (57°F)--
201418°C (64°F)12°C (53°F)--
201320°C (68°F)15°C (59°F)--
201217°C (63°F)12°C (53°F)--
201121°C (69°F)13°C (56°F)--
201022°C (71°F)14°C (58°F)--
200918°C (65°F)11°C (51°F)0"
200820°C (68°F)16°C (61°F)0"
200723°C (74°F)13°C (56°F)0.21"
200623°C (74°F)16°C (61°F)0.06"
200521°C (70°F)15°C (59°F)0.06"
200421°C (69°F)17°C (62°F)0.01"
200321°C (69°F)13°C (56°F)2.04"
200225°C (77°F)16°C (60°F)0"
200121°C (69°F)17°C (63°F)0"
200018°C (64°F)14°C (58°F)0"
199918°C (64°F)12°C (53°F)0.01"
199817°C (63°F)14°C (58°F)0.9"
199722°C (71°F)17°C (62°F)0"
199623°C (73°F)17°C (62°F)0"
199518°C (65°F)7°C (45°F)0"
199416°C (61°F)13°C (55°F)0"
199317°C (62°F)9°C (48°F)0"
199216°C (60°F)11°C (52°F)0.08"
199121°C (69°F)12°C (54°F)0"
199021°C (69°F)11°C (51°F)0"
198917°C (62°F)14°C (57°F)3.68"
198816°C (61°F)13°C (56°F)1.08"
198718°C (64°F)11°C (51°F)0.01"
198618°C (64°F)12°C (53°F)0.43"
198519°C (66°F)16°C (61°F)1.76"
198423°C (73°F)12°C (53°F)0"
198320°C (68°F)9°C (49°F)0"
198217°C (62°F)13°C (55°F)0.25"
198116°C (61°F)13°C (56°F)1.21"
198018°C (65°F)14°C (58°F)1.13"
197918°C (65°F)16°C (61°F)0.63"
197819°C (67°F)9°C (49°F)0"
197714°C (57°F)8°C (46°F)0"
197618°C (64°F)7°C (44°F)0"
197521°C (69°F)11°C (51°F)0.06"
197418°C (65°F)8°C (47°F)0"
197317°C (62°F)10°C (50°F)0.09"
197221°C (70°F)17°C (63°F)0.17"
197123°C (74°F)14°C (57°F)0"

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