January in Oslo — off-season conditions
Hardest · 1.8/10January averages -6°C (21°F) — deep-winter cold that dictates the whole trip: short outdoor stints, indoor plans on standby, and no expectation of long walking days.
At 89 mm of water-equivalent precipitation this is a snowy month at resort level — that is snowpack, not lost days — with almost no days with 6+ hours of sunshine and 6.4 hours of daylight.
It scores 1.8/10 here, 11th of 12 months, against 8.3/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
Flexible dates? May scores 6.5 points higher here — enough to change the trip.
February in Oslo: expect compromises
Hardest · 2.4/10February averages -3°C (26°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
At 88 mm of water-equivalent precipitation this is a snowy month at resort level — that is snowpack, not lost days — with almost no days with 6+ hours of sunshine and 8.7 hours of daylight.
It scores 2.4/10 here, 10th of 12 months, against 8.3/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
Flexible dates? May scores 5.9 points higher here — enough to change the trip.
March in Oslo — the hardest end of the year
Hardest · 3.6/10At -1°C (30°F) this is proper winter weather in March: layer up and split the day between outdoor highlights and indoor stops.
69 mm of water-equivalent precipitation makes this a snowy month at resort level; what falls stays as snow, with almost no days with 6+ hours of sunshine and 11.4 hours of daylight.
That is 3.6/10 on the same scale — 8th of 12 months, versus 8.3/10 for the best month here.
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, May is materially better in Oslo — 4.7 points higher on the same scale.
April in Oslo: mixed conditions, plan around the weather
Trade-offs · 5.7/10April averages 3°C (38°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 73 mm, so plan one flexible day in three; you still get about 12 days with 6+ hours of sunshine and 14.2 hours of daylight.
It scores 5.7/10 here, 5th of 12 months, against 8.3/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
Flexible dates? May scores 2.6 points higher here — enough to change the trip.
May in Oslo tops the year's climate scores
Best window · 8.3/10Expect 11°C (52°F) in May. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 54 mm of rain this month — a flexible day or two helps — with about 25 days with 6+ hours of sunshine and 16.8 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Oslo at 8.3/10 — the reference point every other month on this page is measured against.
Budget for peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
June in Oslo — reliably good (2nd best month)
Good · 8.2/10June averages 15°C (60°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 92 mm, so plan one flexible day in three; you still get about 28 days with 6+ hours of sunshine and 18.4 hours of daylight.
It scores 8.2/10 here, 2nd of 12 months, against 8.3/10 in the destination's best month.
Plan for peak pricing, with crowds are moderate. 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.
July in Oslo — reliably good (3rd best month)
Good · 7.3/10July averages 15°C (60°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Monthly rainfall reaches 131 mm — wet for this destination — but about 21 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 7.3/10 here, 3rd of 12 months, against 8.3/10 in the destination's best month.
Figure on peak pricing, with 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 proper rain shell rather than an umbrella.
August in Oslo — workable with trade-offs
Trade-offs · 6.2/10Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.
168 mm of rain signals a properly wet month, with only about 13 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 6.2/10 on the same scale — 4th of 12 months, versus 8.3/10 for the best month here.
Budget for mid-season 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 proper rain shell rather than an umbrella.
If your dates are flexible, May is materially better in Oslo — 2.1 points higher on the same scale.
September in Oslo — workable with trade-offs
Trade-offs · 5.5/10Expect 12°C (53°F) in September. A good month for city streets, viewpoints and long meals; leave swimming for another season.
114 mm of rain signals a properly wet month, with only about 3 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 5.5/10 on the same scale — 6th of 12 months, versus 8.3/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
If your dates are flexible, May is materially better in Oslo — 2.8 points higher on the same scale.
October in Oslo — off-season conditions
Hardest · 4.3/10October averages 6°C (42°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 81 mm, so plan one flexible day in three; you still get almost no days with 6+ hours of sunshine and 9.7 hours of daylight.
It scores 4.3/10 here, 7th of 12 months, against 8.3/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Flexible dates? May scores 4 points higher here — enough to change the trip.
November in Oslo — the hardest end of the year
Hardest · 2.6/10November averages -1°C (31°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
At 93 mm of water-equivalent precipitation this is a snowy month at resort level — that is snowpack, not lost days — with almost no days with 6+ hours of sunshine and 7.1 hours of daylight.
It scores 2.6/10 here, 9th of 12 months, against 8.3/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
Flexible dates? May scores 5.7 points higher here — enough to change the trip.
December in Oslo — the hardest end of the year
Hardest · 1.8/10December sits at -6°C (20°F), firmly in deep-winter territory. Plan compact outdoor blocks with warm reset points between them rather than full days outside.
83 mm of water-equivalent precipitation makes this a snowy month at resort level; what falls stays as snow, with almost no days with 6+ hours of sunshine and 5.6 hours of daylight.
That is 1.8/10 on the same scale — 12th of 12 months, versus 8.3/10 for the best month here.
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, May is materially better in Oslo — 6.5 points higher on the same scale.
