Oslo at a glance
- Best time
- May – Aug
- Warmest month
- Jul · 21°
- Warmest sea
- Aug · 18.5°
- Sunshine a year
- 1,980 h
- Rain a year
- 906 mm
- Climate
- Continental
- Time zone
- UTC+1 / UTC+2
- Elevation
- 26 m
Climate in Oslo
Oslo has warm to hot summers and cold winters with occasional snow. July is the warmest month with average highs of 21 °C, while January is the coolest at −2 °C. With around 1,980 hours of sunshine a year, Oslo is moderately sunny; May is the sunniest month with 8.7 hours a day.
Weather in October
Holiday weather in October
Poor
Best time to visit: May – August
What is the weather like in Oslo in October?
In October, Oslo is cold: daytime highs average 9 °C, and nights cool down to about 5 °C. The sea averages 12.0 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 12 rainy days and 94 mm in total. All in all, October is not an ideal month for a holiday in Oslo.
More details for October
- Daylight
- 10 h 18 min07:53 – 18:12
- UV index
- 1 · lowclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 15 km/haverage daily peak
- Cloud cover
- 72 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Oslo
How the score comes together
- Temperatureweight 50 %13 %
- Sunshineweight 20 %8 %
- Few rainy daysweight 30 %45 %
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
Sea temperature in Oslo
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 10.9 – 12.9 °C
Swimming season: Never above 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Oslo ranges from 2.8 °C in February to 18.5 °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 17.5 and 19.6 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 3.9° | 2.0° | 5.3° | cold |
| FebruaryFeb | 2.8° | 1.1° | 4.2° | cold |
| MarchMar | 3.1° | 1.1° | 4.5° | cold |
| AprilApr | 6.2° | 4.7° | 7.3° | cold |
| MayMay | 10.9° | 10.0° | 12.5° | cold |
| JuneJun | 15.3° | 13.7° | 16.7° | cold |
| JulyJul | 18.1° | 16.8° | 19.6° | fresh |
| AugustAug | 18.5° | 17.5° | 19.6° | fresh |
| SeptemberSep | 15.7° | 14.6° | 16.8° | cold |
| OctoberOct | 12.0° | 10.9° | 12.9° | cold |
| NovemberNov | 8.9° | 8.1° | 10.0° | cold |
| DecemberDec | 5.8° | 4.0° | 7.5° | cold |
Sunshine hours in Oslo
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 3.5 of 10.3 hours of daylight in Oslo, 34 % of the day.
Sunshine hours count the time with bright, direct sunshine (WMO definition, estimated from model data); daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Oslo: 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, Oslo has about 12 rainy days with 94 mm of rain in total.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
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 | 15 | −2° | −7° | 3.9° | 2.4 h | 11 | 71 |
| FebruaryFeb | 22 | 0° | −6° | 2.8° | 3.9 h | 9 | 54 |
| MarchMar | 33 | 4° | −3° | 3.1° | 6.2 h | 8 | 49 |
| AprilApr | 46 | 10° | 1° | 6.2° | 7.5 h | 9 | 51 |
| MayMay | 71 | 15° | 6° | 10.9° | 8.7 h | 11 | 72 |
| JuneJun | 83 | 19° | 11° | 15.3° | 8.7 h | 11 | 84 |
| JulyJul | 79 | 21° | 14° | 18.1° | 8.1 h | 12 | 99 |
| AugustAug | 75 | 20° | 13° | 18.5° | 6.9 h | 13 | 95 |
| SeptemberSep | 64 | 16° | 10° | 15.7° | 5.5 h | 10 | 84 |
| OctoberOct | 22 | 9° | 5° | 12.0° | 3.5 h | 12 | 94 |
| NovemberNov | 12 | 4° | 1° | 8.9° | 2.0 h | 12 | 85 |
| DecemberDec | 14 | 0° | −4° | 5.8° | 1.7 h | 12 | 69 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)
59.91° N, 10.75° E · 26 m · Europe/Oslo
Best time to visit Oslo
The best time to visit Oslo is from May to August. The sea stays too cool for a classic beach holiday: even in August it only reaches 18.5 °C. For sightseeing, day trips and hiking, conditions are most comfortable from May to June and in September. Rain is most frequent from July to August and in November; the wettest month is July with 99 mm.
Find your perfect month
Tell us what you like and we rate every month in Oslo for you.
Your best months: June – July
Based on the climate averages; tap a month to see its details.
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May – Jun, Sep
15–28 °C and not too much rain
Rainy months
Jul – Aug, Nov
12 or more rainy days
Snow
Nov – Mar
Snow on 2 or more days
Oslo month by month
The typical weather for every month at a glance.
15January-2° · Sea 4° · 2 h
In January, Oslo is freezing cold: daytime highs average −2 °C, and nights often drop below freezing (−7 °C). The sea averages 3.9 °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 71 mm. Snow falls on about 7 days. All in all, January is not an ideal month for a holiday in Oslo.
Oslo in January22February0° · Sea 3° · 4 h
In February, Oslo is freezing cold: daytime highs average 0 °C, and nights often drop below freezing (−6 °C). The sea averages 2.8 °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 9 days, totalling 54 mm. Snow falls on about 6 days. All in all, February is not an ideal month for a holiday in Oslo.
Oslo in February33March4° · Sea 3° · 6 h
In March, Oslo is cold: daytime highs average 4 °C, and nights often drop below freezing (−3 °C). The sea averages 3.1 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain falls on about 8 days, adding up to 49 mm. Snow falls on about 5 days. All in all, March is not an ideal month for a holiday in Oslo.
Oslo in March46April10° · Sea 6° · 8 h
In April, Oslo is cool: daytime highs average 10 °C, and nights cool down to about 1 °C. The sea averages 6.2 °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 51 mm. Snow falls on about 2 days. All in all, April is a so-so month for a holiday in Oslo.
Oslo in April71May15° · Sea 11° · 9 h
In May, Oslo is cool: daytime highs average 15 °C, and nights cool down to about 6 °C. The sea averages 10.9 °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 72 mm in total. All in all, May is a good month for a holiday in Oslo.
Oslo in May83June19° · Sea 15° · 9 h
In June, Oslo is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 15.3 °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 84 mm in total. All in all, June is an excellent month for a holiday in Oslo.
Oslo in June79July21° · Sea 18° · 8 h
In July, Oslo is warm: daytime highs average 21 °C, and nights cool down to about 14 °C. The sea averages 18.1 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain is frequent, with about 12 rainy days and 99 mm in total. All in all, July is a good month for a holiday in Oslo.
Oslo in July75August20° · Sea 19° · 7 h
In August, Oslo is mild: daytime highs average 20 °C, and nights cool down to about 13 °C. The sea averages 18.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7 hours a day. Rain is frequent, with about 13 rainy days and 95 mm in total. All in all, August is a good month for a holiday in Oslo.
Oslo in August64September16° · Sea 16° · 6 h
In September, Oslo is cool: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 15.7 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 84 mm in total. All in all, September is a good month for a holiday in Oslo.
Oslo in September22October9° · Sea 12° · 4 h
In October, Oslo is cold: daytime highs average 9 °C, and nights cool down to about 5 °C. The sea averages 12.0 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 12 rainy days and 94 mm in total. All in all, October is not an ideal month for a holiday in Oslo.
Oslo in October12November4° · Sea 9° · 2 h
In November, Oslo is cold: daytime highs average 4 °C, and nights cool down to about 1 °C. The sea averages 8.9 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Rain is frequent, with about 12 rainy days and 85 mm in total. Snow falls on about 3 days. All in all, November is not an ideal month for a holiday in Oslo.
Oslo in November14December0° · Sea 6° · 2 h
In December, Oslo is freezing cold: daytime highs average 0 °C, and nights often drop below freezing (−4 °C). The sea averages 5.8 °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 12 days, totalling 69 mm. Snow falls on about 6 days. All in all, December is not an ideal month for a holiday in Oslo.
Oslo in DecemberPlanning a trip to Oslo
Getting there
Flying from
- Nonstop flight
- about 1 h 55 min
- Distance
- 1,170 km
- Time zone
- UTC+2
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Oslo
When is the best time to visit Oslo?
The best time to visit Oslo is from May to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Oslo?
The sea temperature in Oslo ranges from 2.8 °C in February to 18.5 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Oslo in October?
Only if you don't mind cold water: in October the sea averages just 12.0 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Oslo?
July is the warmest month, with average highs of 21 °C and nights around 14 °C. January is the coolest month at −2 °C.
When does it rain most in Oslo?
Rain is most frequent from July to August and in November; the wettest month is July with 99 mm. The driest month is March with 49 mm.
How many hours of sunshine does Oslo get?
Oslo gets around 1,980 hours of sunshine a year. The sunniest month is May with 8.7 hours a day; in December there are 1.7 hours a day.
What time zone is Oslo in?
Oslo uses the time zone Europe/Oslo: UTC+1 in January and UTC+2 in July.
How long is the flight from London to Oslo?
A nonstop flight from London to Oslo takes about 1 h 55 min, for a straight-line distance of about 1,170 km.
Near Oslo
Other destinations close by.