Best Time to Visit Helsinki: Weather Month by Month

Q: What is the best time to visit Helsinki?

June is the best month with 19.0°C highs, 12.0°C lows, 9.9h of sunshine and 31.0% rainy days. The months of June & July offer comparable conditions.

Q: How many hours of sunshine does Helsinki get in June?

Helsinki averages 9.9 sunshine hours per day in June. It is the sunniest month with a climate score of 7.2/10.

Q: What is the rainiest month in Helsinki?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

Q: What are the temperatures at night in Helsinki in June?

In June, overnight lows reach 12.0°C, while afternoon highs average 19.0°C.

Q: Is Helsinki good in winter?

In winter (December-February), Helsinki scores 0.7/10 on average — Difficult period — prefer the peak season.. The best month overall remains June with a score of 7.2/10.

Q: When should you avoid Helsinki?

January is the most difficult month to visit Helsinki, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.

Decide

When to visit Helsinki?

The decision rests on several criteria. Climate score, tourist crowds and feasible activities.

Verdict: In Helsinki, June and July clearly stand out. November concentrates the least favourable conditions.

Top & avoid

🏆 June · 7.7 July · 7.7 August · 7.4 May · 4.5 ⚠️ November · 0.6

0.7

Jan

0.8

Feb

1.1

Mar

4.1

Apr

4.5

May

7.7

Jun

7.7

Jul

7.4

Aug

4.4

Sep

1.1

Oct

0.6

Nov

0.7

Dec

Best period · ≥ 7 Decent period · 4 – 7 Tough conditions · < 4

What you grasp in 5 seconds

Helsinki offers 3 comfortable months, with 6 months to avoid (January, February, March, October, November, December). The gap is sharp: 7.7 in June vs 0.6 in November.

What to check next

Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.

Next action

Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.

Compare the 12 months By your project

How we calculate the score

The score combines 4 weighted criteria using 10 years of real climate data (ERA5).

Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →

Understand

Compare all 12 months

Month-by-month details: temperature, rain, sunshine, score and verdict.

✅ 3 comfortable months (Jun · Jul · Aug)

Month	T° min	T° max	Rain %	mm/day	Sun	Score	Verdict
🌧️ January →	-4°C	0°C	38%	2.2mm	1.2h	0.7/10	Tough conditions
🌧️ February →	-4°C	1°C	34%	2.1mm	2.5h	0.8/10	Tough conditions
🌧️ March →	-3°C	2°C	28%	1.4mm	4.5h	1.1/10	Tough conditions
🌥️ April →	0°C	7°C	29%	1.6mm	6.5h	4.1/10	Decent period
🌥️ May →	6°C	13°C	26%	1.5mm	9.2h	4.5/10	Decent period
☀️ June →	12°C	19°C	31%	2.0mm	9.9h	7.7/10	Best period
☀️ July →	14°C	20°C	35%	2.5mm	9.4h	7.7/10	Best period
⛅ August →	14°C	20°C	38%	2.8mm	7.7h	7.4/10	Best period
🌥️ September →	11°C	16°C	33%	2.4mm	5.0h	4.4/10	Decent period
🌧️ October →	5°C	10°C	39%	2.8mm	3.0h	1.1/10	Tough conditions
🌧️ November →	1°C	5°C	39%	2.6mm	1.2h	0.6/10	Tough conditions
🌧️ December →	-2°C	2°C	37%	2.2mm	0.9h	0.7/10	Tough conditions

🌧️ January

0.7/10

T°-4°C / 0°C

Rain %38%

T°-4°C / 1°C

Rain %34%

T°-3°C / 2°C

Rain %28%

T°0°C / 7°C

Rain %29%

Sun6.5h

Decent period

🌥️ May

4.5/10

T°6°C / 13°C

Rain %26%

Decent period

Rain %31%

Best period

Rain %35%

Best period

Rain %38%

Best period

Rain %33%

Decent period

T°5°C / 10°C

Rain %39%

T°1°C / 5°C

Rain %39%

T°-2°C / 2°C

Rain %37%

Sun0.9h

Tough conditions

📊 Quick read

Optimal window

Jun → Aug

Good transition

May · Sep

Tough period

Jan · Feb · Mar · Oct · Nov · Dec

🌡️ Detailed conditions (June)

🌡️ Feel

Comfortable

☀️ UV

5.8 · Moderate

💧 Humidity feel

10°C · Dry

☔ Rain

31% · 2.0 mm/day

🌅 Sunshine

9.9h/day

10-year trend

Annual temperatures — Helsinki

Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.

Tailor

For your trip

A few angles depending on what kind of trip you are planning.

🌌 Auroras: Sept → Mar☀️ Polar day: June🌋 Geothermal

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🏨

Stay

Hotels & rentals · Helsinki

Expedia →

🎟️

Activities

Tours, tickets, experiences

See ↓

✈️

Flights

Multi-airline comparator

Kiwi →

🎟️ Activities & tours · Helsinki

GetYourGuide selection · free cancellation

See all →

Affiliate link · GetYourGuide

Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a subarctic stay.

Country · Finland

🗣️LanguageFinnish

💶CurrencyEuro (€)

🚗DrivingRight-hand

🛡️Safety ⓘVery safe · 1/5

💰Cost of living ⓘExpensive · 4/5

🌡️ Climate

🌍Climate typeSubarctic oceanic

📈Climate trend ⓘStable

🔥Hottest monthJuly · 20°C

❄️Coolest monthJanuary · 0°C

🌧️Rainiest month ⓘOctober · 39%

🌌 Subarctic stay

🌌Northern lights ⓘSept → Mars

☀️Midnight sun ⓘJuin (~21h)

🌬️WindVery frequent

🛂VisaSchengen · 90 days

Explore

Related destinations & guides

If this destination doesn't fit your dates, here are alternatives and guides.

Similar climate destinations

Tallinn · Estonia→

Gothenburg · Sweden→

Saint Petersburg · Russia→

Riga · Latvia→

Nearby destinations

Stockholm · Sweden396 km →

Vilnius · Lithuania610 km →

Minsk · Belarus715 km →

Åre · Sweden718 km →

Guides & rankings

World ranking 2026See →

Best summer destinationsSee →

Winter sunSee →

Where to go in JulySee →

🗺️ Climate map of 754 destinations

Location

Where is Helsinki ?

Global position + regional geographic context.

🌍 World

🔍 Geographic context

Subarctic oceanic climate with a 7.7 → 0.6 gap between best and worst month. 10 years of ERA5 data to choose by project.

60.17°N · 24.94°E

Questions

Frequently asked questions

What is the best time to visit Helsinki?

June is the best month with 19.0°C highs, 12.0°C lows, 9.9h of sunshine and 31.0% rainy days. The months of June & July offer comparable conditions.

How many hours of sunshine does Helsinki get in June?

Helsinki averages 9.9 sunshine hours per day in June. It is the sunniest month with a climate score of 7.2/10.

What is the rainiest month in Helsinki?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

What are the temperatures at night in Helsinki in June?

In June, overnight lows reach 12.0°C, while afternoon highs average 19.0°C.

Is Helsinki good in winter?

In winter (December-February), Helsinki scores 0.7/10 on average — Difficult period — prefer the peak season.. The best month overall remains June with a score of 7.2/10.

When should you avoid Helsinki?

January is the most difficult month to visit Helsinki, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.