January in Helsinki — the hardest end of the year
Hardest · 2.7/10January averages -4°C (25°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 78 mm, so plan one flexible day in three; you still get about 2 sunny days and 6.8 hours of daylight.
It scores 2.7/10 here, 11th of 12 months, against 9.6/10 in the destination's best month.
Expect mid-season pricing, and crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
If your dates are flexible, June is materially better in Helsinki — 6.9 points higher on the same scale.
February in Helsinki — the hardest end of the year
Hardest · 3.5/10February averages -2°C (28°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 78 mm, so plan one flexible day in three; you still get about 6 sunny days and 9.1 hours of daylight.
It scores 3.5/10 here, 10th of 12 months, against 9.6/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
If your dates are flexible, June is materially better in Helsinki — 6.1 points higher on the same scale.
March in Helsinki — workable with trade-offs
Trade-offs · 6/10March averages -1°C (30°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Expect 43 mm of rain — occasional showers rather than washed-out days — alongside about 20 sunny days and 11.8 daylight hours.
It scores 6/10 here, 7th of 12 months, against 9.6/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip.
If your dates are flexible, June is materially better in Helsinki — 3.6 points higher on the same scale.
April in Helsinki — reliably good (6th best month)
Good · 7.1/10April averages 3°C (38°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 49 mm, so plan one flexible day in three; you still get about 23 sunny days and 14.6 hours of daylight.
It scores 7.1/10 here, 6th of 12 months, against 9.6/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
If your dates are flexible, June is materially better in Helsinki — 2.5 points higher on the same scale.
May in Helsinki — the year's strongest window
Best window · 9/10May averages 10°C (50°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 34 mm of rain — occasional showers rather than washed-out days — alongside about 29 sunny days and 17.3 daylight hours.
On our climate-comfort scale this is the top-ranked month of the year for Helsinki at 9/10 — the reference point every other month on this page is measured against.
Expect mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
June in Helsinki — the year's strongest window
Best window · 9.6/10June averages 16°C (61°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Expect 39 mm of rain — occasional showers rather than washed-out days — alongside about 29 sunny days and 18.8 daylight hours.
On our climate-comfort scale this is the top-ranked month of the year for Helsinki at 9.6/10 — the reference point every other month on this page is measured against.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening.
July in Helsinki — reliably good (3rd best month)
Good · 8.4/10July averages 17°C (63°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 78 mm, so plan one flexible day in three; you still get about 30 sunny days and 18 hours of daylight.
It scores 8.4/10 here, 3rd of 12 months, against 9.6/10 in the destination's best month.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
August in Helsinki — reliably good (4th best month)
Good · 8.2/10August averages 18°C (64°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 86 mm, so plan one flexible day in three; you still get about 27 sunny days and 15.6 hours of daylight.
It scores 8.2/10 here, 4th of 12 months, against 9.6/10 in the destination's best month.
Expect peak pricing, and this is one of the busiest months here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
September in Helsinki — reliably good (5th best month)
Good · 8.1/10September averages 14°C (56°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 76 mm, so plan one flexible day in three; you still get about 25 sunny days and 12.9 hours of daylight.
It scores 8.1/10 here, 5th of 12 months, against 9.6/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
If your dates are flexible, June is materially better in Helsinki — 1.5 points higher on the same scale.
October in Helsinki — workable with trade-offs
Trade-offs · 6/10October averages 8°C (46°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 78 mm, so plan one flexible day in three; you still get about 14 sunny days and 10.1 hours of daylight.
It scores 6/10 here, 8th of 12 months, against 9.6/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
If your dates are flexible, June is materially better in Helsinki — 3.6 points higher on the same scale.
November in Helsinki — the hardest end of the year
Hardest · 4/10November averages 3°C (37°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 79 mm, so plan one flexible day in three; you still get about 4 sunny days and 7.5 hours of daylight.
It scores 4/10 here, 9th of 12 months, against 9.6/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
If your dates are flexible, June is materially better in Helsinki — 5.6 points higher on the same scale.
December in Helsinki — the hardest end of the year
Hardest · 2.7/10December averages -2°C (29°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 82 mm, so plan one flexible day in three; you still get about 0 sunny days and 6 hours of daylight.
It scores 2.7/10 here, 12th of 12 months, against 9.6/10 in the destination's best month.
Expect mid-season pricing, and crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
If your dates are flexible, June is materially better in Helsinki — 6.9 points higher on the same scale.
