AI-generatedSundsvall at a glance
- Best time
- Jun – Jul
- Warmest month
- Jul · 20°
- Warmest sea
- Aug · 16.1°
- Sunshine a year
- 1,890 h
- Rain a year
- 600 mm
- Climate
- Continental
- Time zone
- UTC+1 / UTC+2
- Elevation
- 26 m
Climate in Sundsvall
Sundsvall has warm to hot summers and cold winters with occasional snow. July is the warmest month with average highs of 20 °C, while January is the coolest at −2 °C. With around 1,890 hours of sunshine a year, Sundsvall is moderately sunny; June is the sunniest month with 9.2 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Poor
Best time to visit: June – July
A typical day in October
- Morning, 08:00: about 4°
- Midday, 13:00: about 7°
- Afternoon, 16:00: about 7°
- Evening, 20:00: about 6°
- Night, 23:00: about 5°
07:3317:40
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 07:05–08:37 · evening 16:35–18:08
- Blue hour
- Morning 06:47–07:05 · evening 18:08–18:25
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.
What is the weather like in Sundsvall in October?
In October, Sundsvall is cold: daytime highs average 8 °C, and nights cool down to about 4 °C. The sea averages 8.7 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 11 rainy days and 63 mm in total. All in all, October is not an ideal month for a holiday in Sundsvall.
More details for October
- Daylight
- 10 h 7 min07:33 – 17:40
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 20 km/haverage daily peakAll months
- Cloud cover
- 67 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Stockholm
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %5 %
- Few rainy daysweight 20 %54 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Warm jacket
- Rain jacket or umbrella
Sea temperature in Sundsvall
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 7.5 – 10.1 °C
Swimming season: Never above 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Sundsvall ranges from 0.9 °C in February to 16.1 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
The sea warms up slowly: it is warmest in August, while the air already peaks in July. From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 14.7 and 17.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 1.8° | 0.7° | 2.9° | cold |
| FebruaryFeb | 0.9° | −0.1° | 1.9° | cold |
| MarchMar | 1.0° | 0.3° | 1.9° | cold |
| AprilApr | 2.2° | 1.4° | 3.1° | cold |
| MayMay | 5.6° | 4.8° | 6.5° | cold |
| JuneJun | 10.7° | 9.4° | 12.7° | cold |
| JulyJul | 15.4° | 14.1° | 17.1° | cold |
| AugustAug | 16.1° | 14.7° | 17.7° | cold |
| SeptemberSep | 13.2° | 11.7° | 14.4° | cold |
| OctoberOct | 8.7° | 7.5° | 10.1° | cold |
| NovemberNov | 5.5° | 4.3° | 6.3° | cold |
| DecemberDec | 3.3° | 2.1° | 4.2° | cold |
Sunshine hours in Sundsvall
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 3.3 of 10.1 hours of daylight in Sundsvall, 33 % of the day.
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.
UV index in Sundsvall
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 it, 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.
Rain in Sundsvall: 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, Sundsvall has about 11 rainy days with 63 mm of rain in total.
Wind and clouds in Sundsvall
How breezy and how cloudy Sundsvall 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 Sundsvall typically peaks at 20 km/h during the day: Beaufort 4, moderate breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Oct – Mar.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 67 % of the sky over Sundsvall: mostly cloudy, with about 3.3 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 in Sundsvall
When Sundsvall 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, Sundsvall has about 1 days with at least 1 cm of fresh snow, 2 cm in total. The chance of seeing snow during a week's stay is 8 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.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Sundsvall
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 4°. The room should be heated.
The coolest nights are in February (−7°), the warmest in July (13°). Nights fall below 8 °C on average from October 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 | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 12 | −2° | −7° | 1.8° | 1.7 h | 10 | 49 |
| FebruaryFeb | 16 | −2° | −7° | 0.9° | 3.5 h | 8 | 34 |
| MarchMar | 24 | 2° | −4° | 1.0° | 5.2 h | 7 | 32 |
| AprilApr | 28 | 8° | 0° | 2.2° | 7.1 h | 8 | 34 |
| MayMay | 31 | 13° | 5° | 5.6° | 8.3 h | 9 | 39 |
| JuneJun | 33 | 18° | 10° | 10.7° | 9.2 h | 9 | 51 |
| JulyJul | 37 | 20° | 13° | 15.4° | 8.7 h | 11 | 65 |
| AugustAug | 24 | 19° | 13° | 16.1° | 7.0 h | 11 | 71 |
| SeptemberSep | 20 | 15° | 9° | 13.2° | 5.2 h | 9 | 55 |
| OctoberOct | 12 | 8° | 4° | 8.7° | 3.3 h | 11 | 63 |
| NovemberNov | 10 | 2° | −1° | 5.5° | 1.7 h | 11 | 56 |
| DecemberDec | 10 | −1° | −5° | 3.3° | 1.0 h | 11 | 51 |
Climate averages 1996–2025, 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
62.39° N, 17.31° E · 26 m · Europe/Stockholm
Best time to visit Sundsvall
The best time to visit Sundsvall is from June to July. The sea stays too cool for a classic beach holiday: even in August it only reaches 16.1 °C. For sightseeing, day trips and hiking, conditions are most comfortable from June to August. The wettest month is August with 71 mm of precipitation.
Sundsvall through the seasons
How the weather changes over the seasons, with averages for each.
Sundsvall in spring
Mar – May
Poor
- 2–13 °C by day
- Sea 3 °C
- 7 h of sun a day
- 23 rainy days in all
Sundsvall in summer
Jun – Aug
Poor
- 18–20 °C by day
- Sea 14 °C
- 8 h of sun a day
- 31 rainy days in all
Sundsvall in autumn
Sep – Nov
Poor
- 2–15 °C by day
- Sea 9 °C
- 3 h of sun a day
- 31 rainy days in all
Sundsvall in winter
Dec – Feb
Poor
- -2–-1 °C by day
- Sea 2 °C
- 2 h of sun a day
- 29 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Sundsvall for you.
Your best months: May – July
Based on the climate averages; tap a month to see its details.
Compare two months in Sundsvall
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Sundsvall: score 37 against 12. In July, days are 12 °C warmer than in October. The sea is 7 °C warmer in July. The sun shines 5 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Weather score | 12 | 37better |
| Day high | 8° | 20° |
| Night low | 4° | 13° |
| Sea | 8.7° | 15.4° |
| Sunshine | 3.3 h | 8.7 hbetter |
| Rainy days | 11 | 11 |
| Rainfall | 63 mm | 65 mm |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jun – Aug
15–28 °C and not too much rain
Snow
Nov – Apr
Snow on 2 or more days
Sundsvall month by month
The typical weather for every month at a glance.
12January-2° · Sea 2° · 2 h
In January, Sundsvall is freezing cold: daytime highs average −2 °C, and nights often drop below freezing (−7 °C). The sea averages 1.8 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Precipitation, often as snow, falls on about 10 days, totalling 49 mm. Snow falls on about 8 days. All in all, January is not an ideal month for a holiday in Sundsvall.
Sundsvall in January16February-2° · Sea 1° · 4 h
In February, Sundsvall is freezing cold: daytime highs average −2 °C, and nights often drop below freezing (−7 °C). The sea averages 0.9 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Precipitation, often as snow, falls on about 8 days, totalling 34 mm. Snow falls on about 6 days. All in all, February is not an ideal month for a holiday in Sundsvall.
Sundsvall in February24March2° · Sea 1° · 5 h
In March, Sundsvall is freezing cold: daytime highs average 2 °C, and nights often drop below freezing (−4 °C). The sea averages 1.0 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Precipitation, often as snow, falls on about 7 days, totalling 32 mm. Snow falls on about 5 days. All in all, March is not an ideal month for a holiday in Sundsvall.
Sundsvall in March28April8° · Sea 2° · 7 h
In April, Sundsvall is cold: daytime highs average 8 °C, and nights often drop below freezing (0 °C). The sea averages 2.2 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 34 mm. Snow falls on about 2 days. All in all, April is not an ideal month for a holiday in Sundsvall.
Sundsvall in April31May13° · Sea 6° · 8 h
In May, Sundsvall is cool: daytime highs average 13 °C, and nights cool down to about 5 °C. The sea averages 5.6 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 9 days, adding up to 39 mm. All in all, May is not an ideal month for a holiday in Sundsvall.
Sundsvall in May33June18° · Sea 11° · 9 h
In June, Sundsvall is mild: daytime highs average 18 °C, and nights cool down to about 10 °C. The sea averages 10.7 °C – swimming is only for the hardy. With around 9 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 9 rainy days and 51 mm in total. All in all, June is not an ideal month for a holiday in Sundsvall.
Sundsvall in June37July20° · Sea 15° · 9 h
In July, Sundsvall is mild: daytime highs average 20 °C, and nights cool down to about 13 °C. The sea averages 15.4 °C – swimming is only for the hardy. The sun shines for around 9 hours a day. Rain is frequent, with about 11 rainy days and 65 mm in total. All in all, July is not an ideal month for a holiday in Sundsvall.
Sundsvall in July24August19° · Sea 16° · 7 h
In August, Sundsvall is mild: daytime highs average 19 °C, and nights cool down to about 13 °C. The sea averages 16.1 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 71 mm in total. All in all, August is not an ideal month for a holiday in Sundsvall.
Sundsvall in August20September15° · Sea 13° · 5 h
In September, Sundsvall is cool: daytime highs average 15 °C, and nights cool down to about 9 °C. The sea averages 13.2 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 55 mm in total. All in all, September is not an ideal month for a holiday in Sundsvall.
Sundsvall in September12October8° · Sea 9° · 3 h
In October, Sundsvall is cold: daytime highs average 8 °C, and nights cool down to about 4 °C. The sea averages 8.7 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 11 rainy days and 63 mm in total. All in all, October is not an ideal month for a holiday in Sundsvall.
Sundsvall in October10November2° · Sea 6° · 2 h
In November, Sundsvall is freezing cold: daytime highs average 2 °C, and nights often drop below freezing (−1 °C). The sea averages 5.5 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Precipitation, often as snow, falls on about 11 days, totalling 56 mm. Snow falls on about 4 days. All in all, November is not an ideal month for a holiday in Sundsvall.
Sundsvall in November10December-1° · Sea 3° · 1 h
In December, Sundsvall is freezing cold: daytime highs average −1 °C, and nights often drop below freezing (−5 °C). The sea averages 3.3 °C – swimming is only for the hardy. The sun is scarce, with only about 1 hours a day. Precipitation, often as snow, falls on about 11 days, totalling 51 mm. Snow falls on about 6 days. All in all, December is not an ideal month for a holiday in Sundsvall.
Sundsvall in DecemberSundsvall compared
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Sundsvall vs. Gävle
In October the holiday weather in Sundsvall and Gävle is about equally good (score 12 vs. 12). During the day Gävle is 1 °C warmer than Sundsvall. The sea is about equally warm.
| in October | Sundsvall | Gävle |
|---|---|---|
| Holiday score | 12 | 12 |
| Daytime high | 8° | 9° |
| Sea | 9° | 9° |
| Sunshine | 3 h | 3 h |
| Rainy days | 11 | 10 |
| Best time | Jun – Jul | Jul |
Through the year
Sweden in October: the best places
In October, Sundsvall ranks 15 of 25 destinations in this country.
- Malmö12°12°35
- 2Lund12°32
- 3Linköping10°26
- 4Uppsala9°25
- 5Västerås9°24
- 6Stockholm10°10°24
- 7Jönköping10°24
- 8Gothenburg11°12°24
- 15SundsvallThis page8°9°12
Planning a trip to Sundsvall
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Sundsvall 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.
Sundsvall has its best school-holiday weather during May half-term (score 31) and its weakest during the Christmas holidays (score 11).
- 27
Easter holidays
Mar – Apr
Poor
- 6 °C by day
- Sea 2 °C
- 6.5 h of sun a day
- 7 rainy days a month
Keep in mind: Snow
- 31
May half-term
May – Jun
PoorBest holidays
- 14 °C by day
- Sea 7 °C
- 8.5 h of sun a day
- 9 rainy days a month
- 29
Summer holidays
Jul – Aug
Poor
- 20 °C by day
- Sea 16 °C
- 7.6 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 12
October half-term
Oct
Poor
- 8 °C by day
- Sea 9 °C
- 3.3 h of sun a day
- 11 rainy days a month
- 11
Christmas holidays
Dec – Jan
Poor
- −1 °C by day
- Sea 3 °C
- 1.4 h of sun a day
- 10 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 2 h 25 min
- Distance
- 1,610 km
- Time zone
- UTC+2
- 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.
Frequently asked questions about Sundsvall
When is the best time to visit Sundsvall?
The best time to visit Sundsvall is from June to July. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Sundsvall?
The sea temperature in Sundsvall ranges from 0.9 °C in February to 16.1 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Sundsvall in October?
Only if you don't mind cold water: in October the sea averages just 8.7 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Sundsvall?
July is the warmest month, with average highs of 20 °C and nights around 13 °C. January is the coolest month at −2 °C.
When does it rain most in Sundsvall?
The wettest month is August with 71 mm of precipitation. The driest month is March with 32 mm.
How many hours of sunshine does Sundsvall get?
Sundsvall gets around 1,890 hours of sunshine a year. The sunniest month is June with 9.2 hours a day; in December there are 1.0 hours a day.
What time zone is Sundsvall in?
Sundsvall uses the time zone Europe/Stockholm: UTC+1 in January and UTC+2 in July.
How long is the flight from London to Sundsvall?
A nonstop flight from London to Sundsvall takes about 2 h 25 min, for a straight-line distance of about 1,610 km.
Which school holidays are best for Sundsvall?
Sundsvall has its best school-holiday weather during May half-term (score 31) and its weakest during the Christmas holidays (score 11). Holiday ratings (0–100): Easter holidays 27, May half-term 31, Summer holidays 29, October half-term 12, Christmas holidays 11.
Near Sundsvall
Other destinations close by.
Places with a climate like Sundsvall
Destinations whose weather through the year is closest to Sundsvall's – good alternatives.