Norway records about 1250mm of rain across roughly 162 wet days a year, which is a 44% chance on an average day. December is the wettest month at 145mm (12% of the annual total) and April the driest at 58mm. Local rain type: steady rain. Norway is one of Europe's wettest countries — Bergen alone gets over 2,000mm annually. Quality waterproofs are essential, not optional.
Chance of rain on an average day: 44%
Rainfall climatology for Norway. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 1250mm |
| Rain days per year | 162 |
| Odds on an average day | 44% |
| Wettest month | December — 145mm over 20 days |
| Driest month | April — 58mm over 8 days |
| Rain type | steady rain |
| Best dry window | May and early June offer the driest conditions with long Nordic daylight. |
| Worst rain window | October through January brings heavy, persistent rain on the west coast and snow inland. |
December delivers 150% more rain than April (145mm vs 58mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 12% of the annual total, so rain in Norway is spread through the year — there is no season you can rely on being dry.
Norway rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 20 days in December against 8 in April — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 100mm | 14 | 47% | 0°C |
| February | 72mm | 10 | 33% | 0°C |
| March | 82mm | 11 | 37% | 3°C |
| April | 58mm | 8 | 27% | 7°C |
| May | 68mm | 9 | 30% | 13°C |
| June | 75mm | 10 | 33% | 17°C |
| July | 88mm | 12 | 40% | 20°C |
| August | 110mm | 15 | 50% | 20°C |
| September | 118mm | 16 | 53% | 17°C |
| October | 140mm | 19 | 63% | 13°C |
| November | 130mm | 18 | 60% | 7°C |
| December | 145mm | 20 | 67% | 3°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Norway we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Norway records rain on roughly 162 days a year — about a 44% chance on any given day — totalling around 1250mm.
December, with about 145mm over 20 rain days. That is 12% of the entire year's rainfall in a single month.
April is the driest month at 58mm across roughly 8 days. May and early June offer the driest conditions with long Nordic daylight.
Norway is one of Europe's wettest countries — Bergen alone gets over 2,000mm annually. Quality waterproofs are essential, not optional.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.