Monthly weather averages & travel planning

Europe › 🇳🇴 Norway › Bergen
Updated: March 2026
September is a avoid time to visit Bergen (3/10). With 7 daily sunshine hours and only 18 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 6th sunniest of the year in Bergen. September suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 18 potential rain days. October offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 18 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: most accommodation categories have availability, and last-minute deals are common. The quieter streets and shorter queues can make this a genuinely enjoyable time to visit for the right type of traveller. Budget-conscious visitors will find the best value of the year in this period.
Based on 30-year climate normals (1991 to 2020), September in Bergen averages 14°C by day and 9°C overnight, a range that places it in the temperate middle ground of the year. The month records approximately 7 sunshine hours per day and 245mm of total rainfall across 18 wet days, giving it a sunshine-to-rain ratio that is broadly workable for most itineraries.
14°C
57°F
Avg High
9°C
48°F
Avg Low
18 days
245 mm total
Rain Days
7h
per day avg
Sunshine
65%
Moderate
Humidity
The narrow 5°C gap between daytime and overnight temperatures, characteristic of coastal cities with maritime moderation, means a single mid-layer works across the whole day. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Wind averages 20 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 57°F average high, 48°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Bergen in September means dressing for 14°C days and 9°C evenings. A mid-weight jacket over a sweater handles 14°C daytime temperatures; the combination stays comfortable all day without overheating. Evening temperatures settle at 9°C, a modest 5°C drop that a light cardigan or denim jacket covers. European cobblestones reward low-profile walking shoes over flip-flops or heels, with cushioned trainers or leather walking shoes being the practical choice. With 18 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes.
Local tip: Bergen's cobbled streets turn slippery in the rain. Waterproof walking shoes with a non-slip sole outperform fashionable footwear on wet stone, and you'll cover significantly more ground in comfort.
September has no major festivals or public holidays in Bergen, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 14°C average highs and 18 rainy days
September brings the first meaningful shift toward cooler conditions in Bergen, as the sun angle drops and day length shortens. Temperatures averaging 14°C by day and 9°C overnight are still comfortable by most standards, but the trend is clearly downward. At 60 degrees north latitude, autumn light has a particular quality: lower in the sky and warmer in tone, it gives the city a photogenic quality quite different from summer. Evening temperatures already demand a jacket, but midday hours stay pleasant for sightseeing. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Bergen in September
September ranks 6th sunniest of the year in Bergen, with an average 7 daily sunshine hours. The driest months are May, June, and April. July is the hottest month (17°C avg high); January is the coolest (2°C). From here, temperatures fall 4°C into October. Compared to last month (August: 17°C high, 17 rain days), September is cooler and wetter. September sits in the middle of the annual sunshine ranking for Bergen, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 2°C | -1°C | 20 | 2h | View |
| February | 3°C | -2°C | 17 | 4h | View |
| March | 5°C | 0°C | 18 | 6h | View |
| April | 9°C | 2°C | 15 | 10h | View |
| May | 12°C | 5°C | 14 | 12h | View |
| June | 15°C | 9°C | 14 | 12h | View |
| July | 17°C | 11°C | 17 | 12h | View |
| August | 17°C | 11°C | 17 | 10h | View |
| September | 14°C | 9°C | 18 | 7h | View |
| October | 10°C | 5°C | 19 | 5h | View |
| November | 5°C | 2°C | 19 | 3h | View |
| December | 3°C | -1°C | 20 | 2h | View |
January
20 rain days, 2h sun
February
17 rain days, 4h sun
March
18 rain days, 6h sun
April
15 rain days, 10h sun
May
14 rain days, 12h sun
June
14 rain days, 12h sun
July
17 rain days, 12h sun
August
17 rain days, 10h sun
September
18 rain days, 7h sun
October
19 rain days, 5h sun
November
19 rain days, 3h sun
December
20 rain days, 2h sun
Cities within 500 km with comparable weather conditions
Data Sources for Bergen
Climate normals represent 30-year averages (1991-2020). Individual years may vary.