AI-generatedHämeenlinna at a glance
- Best time
- May – Aug
- Warmest month
- Jul · 23°
- Sunshine a year
- 1,640 h
- Rain a year
- 628 mm
- Climate
- Continental
- Time zone
- UTC+2 / UTC+3
- Elevation
- 83 m
Climate in Hämeenlinna
Hämeenlinna has mild to warm summers and cold winters with occasional snow. July is the warmest month with average highs of 23 °C, while January is the coolest at −3 °C. With around 1,640 hours of sunshine a year, Hämeenlinna is moderately sunny; May is the sunniest month with 8.6 hours a day.
Holiday weather through the year
Best time to visit Hämeenlinna
The best time to visit Hämeenlinna is from May to August. For sightseeing, day trips and hiking, conditions are most comfortable in May and in September. The wettest month is July with 87 mm of precipitation.
Hämeenlinna through the seasons
How the weather changes over the seasons, with averages for each.
Hämeenlinna in spring
Mar – May
Fair
- 2–16 °C by day
- 6.4 h of sun a day
- 27 rainy days in all
Hämeenlinna in summer
Jun – Aug
Good
- 20–23 °C by day
- 7.9 h of sun a day
- 39 rainy days in all
Hämeenlinna in autumn
Sep – Nov
Poor
- 3–15 °C by day
- 2.4 h of sun a day
- 31 rainy days in all
Hämeenlinna in winter
Dec – Feb
Poor
- −2–0 °C by day
- 1.3 h of sun a day
- 30 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May, Sep
15–28 °C and not too much rain
Snow
Nov – Apr
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Hämeenlinna for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: May – August
A typical day in October
- Morning, 08:00: about 3°
- Midday, 13:00: about 7°
- Afternoon, 16:00: about 8°
- Evening, 20:00: about 6°
- Night, 23:00: about 4°
08:0118:15
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:34–09:02 · evening 17:13–18:41
- Blue hour
- Morning 07:18–07:34 · evening 18:41–18:58
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Hämeenlinna compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 11° at the start of the month to 5° at the end. The days get 2.8 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 11° | 5° |
| Night-time low | 5° | 0° |
| Daylight | 11.5 h | 8.8 h |
What is the weather like in Hämeenlinna in October?
In October, Hämeenlinna is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 2.1 hours a day. Rain is frequent, with about 11 rainy days and 55 mm in total. All in all, October is not an ideal month for a holiday in Hämeenlinna.
More details for October
- Daylight
- 10 h 14 min08:01 – 18:15
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 78 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC+3offset from UTC
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %51 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Warm jacket
- Rain jacket or umbrella
Compare two months in Hämeenlinna
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Hämeenlinna: score 80 against 15. In June, days are 12 °C warmer than in October. June has one more rainy day. The sun shines 6 hours longer a day in June.
| Month | October | June |
|---|---|---|
| Holiday weather score | 15 | 80better |
| Daytime high | 8° | 20° |
| Night-time low | 2° | 9° |
| Sunshine | 2.1 h | 8.4 hbetter |
| Rainy days | 11better | 12 |
| Rainfall | 55 mmbetter | 77 mm |
Based on the climate averages 1996–2025.
Hämeenlinna month by month
The typical weather for every month at a glance.
16January−2° · 1.0 h
In January, Hämeenlinna is bitterly cold: daytime highs average −3 °C, and nights often drop below freezing (−8 °C). The sun is scarce, with only about 1.0 hours a day. Precipitation falls on about 10 days, totalling 42 mm; on about 9 of them it snows. All in all, January is not an ideal month for a holiday in Hämeenlinna.
Hämeenlinna in January21February−2° · 2.3 h
In February, Hämeenlinna is bitterly cold: daytime highs average −3 °C, and nights often drop below freezing (−9 °C). The sun is scarce, with only about 2.3 hours a day. Precipitation falls on about 8 days, totalling 34 mm; on about 6 of them it snows. All in all, February is not an ideal month for a holiday in Hämeenlinna.
Hämeenlinna in February26March2° · 4.4 h
In March, Hämeenlinna is bitterly cold: daytime highs average 2 °C, and nights often drop below freezing (−6 °C). Expect around 4.4 hours of sunshine a day. Precipitation falls on about 8 days, totalling 31 mm; on about 5 of them it snows. All in all, March is not an ideal month for a holiday in Hämeenlinna.
Hämeenlinna in March37April9° · 6.2 h
In April, Hämeenlinna is cold: daytime highs average 9 °C, and nights often drop below freezing (−1 °C). Expect around 6.2 hours of sunshine a day. Rain falls on about 8 days, adding up to 36 mm. Snow falls on about 3 days. All in all, April is not an ideal month for a holiday in Hämeenlinna.
Hämeenlinna in April75May16° · 8.6 h
In May, Hämeenlinna is mild: daytime highs average 16 °C, and nights cool down to about 5 °C. The sun shines for around 8.6 hours a day. Rain is frequent, with about 11 rainy days and 51 mm in total. All in all, May is a good month for a holiday in Hämeenlinna.
Hämeenlinna in May80June20° · 8.4 h
In June, Hämeenlinna is mild: daytime highs average 20 °C, and nights cool down to about 9 °C. The sun shines for around 8.4 hours a day. Rain is frequent, with about 12 rainy days and 77 mm in total. All in all, June is an excellent month for a holiday in Hämeenlinna.
Hämeenlinna in June78July23° · 8.4 h
In July, Hämeenlinna is warm: daytime highs average 23 °C, and nights cool down to about 12 °C. The sun shines for around 8.4 hours a day. Rain is frequent, with about 14 rainy days and 87 mm in total. All in all, July is a good month for a holiday in Hämeenlinna.
Hämeenlinna in July74August21° · 6.8 h
In August, Hämeenlinna is warm: daytime highs average 21 °C, and nights cool down to about 11 °C. The sun shines for around 6.8 hours a day. Rain is frequent, with about 13 rainy days and 71 mm in total. All in all, August is a good month for a holiday in Hämeenlinna.
Hämeenlinna in August58September15° · 4.2 h
In September, Hämeenlinna is cool: daytime highs average 15 °C, and nights cool down to about 7 °C. Expect around 4.2 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 51 mm in total. All in all, September is a so-so month for a holiday in Hämeenlinna.
Hämeenlinna in September15October8° · 2.1 h
In October, Hämeenlinna is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 2.1 hours a day. Rain is frequent, with about 11 rainy days and 55 mm in total. All in all, October is not an ideal month for a holiday in Hämeenlinna.
Hämeenlinna in October16November3° · 0.8 h
In November, Hämeenlinna is bitterly cold: daytime highs average 3 °C, and nights often drop below freezing (−1 °C). The sun is scarce, with only about 0.8 hours a day. Precipitation falls on about 11 days, totalling 47 mm; on about 4 of them it snows. All in all, November is not an ideal month for a holiday in Hämeenlinna.
Hämeenlinna in November15December0° · 0.5 h
In December, Hämeenlinna is bitterly cold: daytime highs average 0 °C, and nights often drop below freezing (−5 °C). The sun is scarce, with only about 0.5 hours a day. Precipitation falls on about 11 days, totalling 48 mm; on about 7 of them it snows. All in all, December is not an ideal month for a holiday in Hämeenlinna.
Hämeenlinna in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Hämeenlinna
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
ColdOctober: nights around 2°. The room should be heated.
The coolest nights are in February (−9°), the warmest in July (12°). Nights fall below 8 °C on average from September to May, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 16 | −3° | −8° | 1.0 h | 10 | 42 |
| FebruaryFeb | 21 | −3° | −9° | 2.3 h | 8 | 34 |
| MarchMar | 26 | 2° | −6° | 4.4 h | 8 | 31 |
| AprilApr | 37 | 9° | −1° | 6.2 h | 8 | 36 |
| MayMay | 75 | 16° | 5° | 8.6 h | 11 | 51 |
| JuneJun | 80 | 20° | 9° | 8.4 h | 12 | 77 |
| JulyJul | 78 | 23° | 12° | 8.4 h | 14 | 87 |
| AugustAug | 74 | 21° | 11° | 6.8 h | 13 | 71 |
| SeptemberSep | 58 | 15° | 7° | 4.2 h | 10 | 51 |
| OctoberOct | 15 | 8° | 2° | 2.1 h | 11 | 55 |
| NovemberNov | 16 | 3° | −1° | 0.8 h | 11 | 47 |
| DecemberDec | 15 | 0° | −5° | 0.5 h | 11 | 48 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
61.00° N, 24.46° E · 83 m · Europe/Helsinki
Sunshine
Sunshine hours in Hämeenlinna
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 2.1 of 10.2 hours of daylight in Hämeenlinna, 21 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain
Rain in Hämeenlinna: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Hämeenlinna has about 11 rainy days with 55 mm of rain in total.
UV index
UV index in Hämeenlinna
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 1 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 5).
Minutes until sunburn in October
- Very fair skin
- over 2 h
- Fair skin
- over 2 h
- Light brown skin
- over 2 h
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind & clouds
Wind and clouds in Hämeenlinna
How breezy and how cloudy Hämeenlinna is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Hämeenlinna typically peaks at 16 km/h during the day: Beaufort 3, gentle breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 78 % of the sky over Hämeenlinna: mostly cloudy, with about 2.1 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Snow
Snow in Hämeenlinna
When Hämeenlinna is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, Hämeenlinna has about 1 day with at least 1 cm of fresh snow, 4 cm in total. The chance of seeing snow during a week's stay is 13 out of 100: hardly any.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Hämeenlinna
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Hämeenlinna in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Hämeenlinna has its best school-holiday weather during May half-term (score 76) and its weakest during October half-term (score 15).
- 34
Easter holidays
Mar – Apr
Poor
- 7 °C by day
- 5.7 h of sun a day
- 8 rainy days a month
Keep in mind: Snow
- 76
May half-term
May – Jun
GoodBest holidays
- 17 °C by day
- 8.6 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 75
Summer holidays
Jul – Aug
Good
- 22 °C by day
- 7.4 h of sun a day
- 13 rainy days a month
- 15
October half-term
Oct
Poor
- 8 °C by day
- 2.1 h of sun a day
- 11 rainy days a month
- 16
Christmas holidays
Dec – Jan
Poor
- −1 °C by day
- 0.8 h of sun a day
- 11 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 2 h 45 min
- Distance
- 1,850 km
- Time zone
- UTC+3
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Good to know: Finland
- Currency
- Euro (EUR)
- Languages
- Finnish, Swedish
- Sockets
- Type C, F · 230 V
- Traffic
- Drives on the right
- Dialling code
- +358
- Emergency number
- 112
UK plugs need a travel adapter
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Hämeenlinna compared
Put Hämeenlinna side by side with another destination.
Hämeenlinna vs Lahti
In October the holiday weather in Hämeenlinna and Lahti is about equally good (score 15 vs 14). During the day it is about as warm in Lahti as in Hämeenlinna.
| in October | Hämeenlinna | Lahti |
|---|---|---|
| Holiday weather score | 15 | 14 |
| Daytime high | 8° | 8° |
| Sunshine | 2 h | 2 h |
| Rainy days | 11 | 11 |
| Best time | May – Aug | May – Aug |
Through the year
Best places in the country
Finland in October: the best places
In October, Hämeenlinna ranks 7 among the 31 nearest destinations in this country.
- Espoo9°11°21
- 2Turku9°11°21
- 3Helsinki9°11°20
- 4Vantaa9°19
- 5Seinäjoki7°16
- 6Kokkola7°9°16
- 7HämeenlinnaThis page8°15
- 8Nokia8°15
Places nearby
Near Hämeenlinna
Other destinations close by.
Places with a similar climate
Places with a climate like Hämeenlinna
Destinations whose weather through the year is closest to Hämeenlinna's – good alternatives.
Frequently asked questions about Hämeenlinna
When is the best time to visit Hämeenlinna?
The best time to visit Hämeenlinna is from May to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Hämeenlinna?
July is the warmest month, with average highs of 23 °C and nights around 12 °C. January is the coolest month at −3 °C.
When does it rain most in Hämeenlinna?
The wettest month is July with 87 mm of precipitation. The driest month is March with 31 mm.
How many hours of sunshine does Hämeenlinna get?
Hämeenlinna gets around 1,640 hours of sunshine a year. The sunniest month is May with 8.6 hours a day; in December there are 0.5 hours a day.
What time zone is Hämeenlinna in?
Hämeenlinna is on UTC+2 in January and UTC+3 in July.
How long is the flight from London to Hämeenlinna?
A nonstop flight from London to Hämeenlinna takes about 2 h 45 min, for a straight-line distance of about 1,850 km.
Which school holidays are best for Hämeenlinna?
Hämeenlinna has its best school-holiday weather during May half-term (score 76) and its weakest during October half-term (score 15). Holiday ratings (0–100): Easter holidays 34, May half-term 76, summer holidays 75, October half-term 15, Christmas holidays 16.