Alesund weather in September

In September, Alesund sees average daytime highs of 13°C and overnight lows near 10°C, with 221 mm of rain across 18.3 wet days and about 12.6 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 14°C in the first days to 11°C by the end. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of September to 11 h 06 min by month's end. Set against the rest of the year, September is Alesund's 4th-clearest and 7th-windiest month. For the whole year in context, see Alesund's year-round climate.

Daytime high: 13°; 3rd warmest
Overnight low: 10°; 10th coldest
Rainfall: 221 mm; 18.3 wet days
Daylight: 12 h 36 min; 6:12 AM – 6:48 PM
Cloud cover: 72%; 4th clearest
Wind: 17 km/h; 7th windiest
Solar energy: 2.16 kWh/m²
Travel score: 2.8; out of 10

Alesund is town in Norway.

Air quality: Excellent; PM10 13.2 µg/m³ · 2019
Density: 1,902/km²; people per km²
Founded: 1824

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Alesund year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 14°C in the first days to 11°C by the end.

A typical September day in Alesund reaches about 13°C in the afternoon and slips back to 10°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 16°C. Set against its neighbours, September runs about 2°C cooler than August and about 4°C warmer than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	14	14	14	14	14	14	14	14	13	13	13	13	13	13	13	13	13	13	13	12	12	12	12	12	12	12	12	12	11	11
Avg low (°C)	11	11	11	11	11	11	11	11	10	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9	8	8

	Avg high (°C)	Avg low (°C)
1	14	11
2	14	11
3	14	11
4	14	11
5	14	11
6	14	11
7	14	11
8	14	11
9	13	10
10	13	10
11	13	10
12	13	10
13	13	10
14	13	10
15	13	10
16	13	10
17	13	10
18	13	10
19	13	10
20	12	9
21	12	9
22	12	9
23	12	9
24	12	9
25	12	9
26	12	9
27	12	9
28	12	9
29	11	8
30	11	8

How September really feels in Alesund

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Alesund weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	3° / 0°	205	19.8	12.3	5.6	0.0
Feb	3° / 0°	179	17.9	12.3	8.2	0.0
Mar	4° / 1°	169	18.3	10.4	11.3	0.0
Apr	6° / 3°	110	14.5	5.1	14.4	0.5
May	9° / 6°	103	15.3	1.5	17.4	1.7
Jun	12° / 9°	117	15.6	0	19.3	2.6
Jul	14° / 11°	119	15.6	0	18.5	3.5
Aug	15° / 12°	153	17.8	0	15.8	3.6
Sep	13° / 10°	221	18.3	0	12.6	2.8
Oct	9° / 6°	220	18.7	2.2	9.5	1.4
Nov	5° / 3°	197	17.2	5.4	6.5	0.2
Dec	3° / 1°	219	20.1	10.6	4.7	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 71%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	25	25	26	26	27	27	27	27	28	29	29	29	29	29	28	29	29	29	29	30	30	30	30	30	30	29	29	29	29	29
Cloudier (%)	75	75	74	74	73	73	73	73	72	71	71	71	71	71	72	71	71	71	71	70	70	70	70	70	70	71	71	71	71	71

	Clearer (%)	Cloudier (%)
1	25	75
2	25	75
3	26	74
4	26	74
5	27	73
6	27	73
7	27	73
8	27	73
9	28	72
10	29	71
11	29	71
12	29	71
13	29	71
14	29	71
15	28	72
16	29	71
17	29	71
18	29	71
19	29	71
20	30	70
21	30	70
22	30	70
23	30	70
24	30	70
25	30	70
26	29	71
27	29	71
28	29	71
29	29	71
30	29	71

Chance of precipitation in September

Any precipitation

Alesund gets around 221 mm of rain over 18.3 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 62% and peaks near 64% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	64	64	64	64	64	63	63	63	62	62	62	62	62	61	61	61	61	60	60	60	60	60	60	60	60	60	61	61	61	62

	Rain chance (%)
1	64
2	64
3	64
4	64
5	64
6	63
7	63
8	63
9	62
10	62
11	62
12	62
13	62
14	61
15	61
16	61
17	61
18	60
19	60
20	60
21	60
22	60
23	60
24	60
25	60
26	60
27	61
28	61
29	61
30	62

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	94	94	95	95	96	96	96	96	97	97	97	97	97	97	97	97	98	98	98	98	99	99	99	99	99	100	100	100	100	100
Comfortable (%)	6	6	5	5	4	4	4	4	3	3	3	3	3	3	3	3	2	2	2	2	1	1	1	1	1	0	0	0	0	0

	Dry (%)	Comfortable (%)
1	94	6
2	94	6
3	95	5
4	95	5
5	96	4
6	96	4
7	96	4
8	96	4
9	97	3
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	97	3
17	98	2
18	98	2
19	98	2
20	98	2
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

Wind in September

Winds average 17 km/h in September.

Across September, daily wind ranges from about 15 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	15	15	16	16	16	16	16	16	16	16	16	16	16	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	15	light breeze
2	15	light breeze
3	16	light breeze
4	16	light breeze
5	16	light breeze
6	16	light breeze
7	16	light breeze
8	16	light breeze
9	16	light breeze
10	16	light breeze
11	16	light breeze
12	16	light breeze
13	16	light breeze
14	17	light breeze
15	17	light breeze
16	17	light breeze
17	17	light breeze
18	17	light breeze
19	17	light breeze
20	17	light breeze
21	17	light breeze
22	17	light breeze
23	17	light breeze
24	17	light breeze
25	17	light breeze
26	17	light breeze
27	17	light breeze
28	17	light breeze
29	17	light breeze
30	17	light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 14 h 06 min at the start of September to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 180 minutes over September. Sunrise moves from 5:31 AM to 6:50 AM, and sunset from 7:39 PM to 5:59 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	14.1	14.0	13.9	13.8	13.7	13.6	13.5	13.4	13.3	13.2	13.1	13.0	12.9	12.8	12.7	12.6	12.5	12.4	12.3	12.2	12.1	12.0	11.9	11.8	11.7	11.6	11.5	11.4	11.3	11.1
Sunrise (AM)	5:31	5:34	5:36	5:39	5:42	5:45	5:47	5:50	5:53	5:56	5:58	6:01	6:04	6:06	6:09	6:12	6:15	6:17	6:20	6:23	6:26	6:28	6:31	6:34	6:36	6:39	6:42	6:45	6:47	6:50
Sunset (PM)	7:39	7:36	7:32	7:29	7:26	7:22	7:19	7:15	7:12	7:08	7:05	7:01	6:58	6:54	6:51	6:48	6:44	6:41	6:37	6:34	6:30	6:27	6:23	6:20	6:16	6:13	6:09	6:06	6:03	5:59

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.1	5:31	7:39
2	14.0	5:34	7:36
3	13.9	5:36	7:32
4	13.8	5:39	7:29
5	13.7	5:42	7:26
6	13.6	5:45	7:22
7	13.5	5:47	7:19
8	13.4	5:50	7:15
9	13.3	5:53	7:12
10	13.2	5:56	7:08
11	13.1	5:58	7:05
12	13.0	6:01	7:01
13	12.9	6:04	6:58
14	12.8	6:06	6:54
15	12.7	6:09	6:51
16	12.6	6:12	6:48
17	12.5	6:15	6:44
18	12.4	6:17	6:41
19	12.3	6:20	6:37
20	12.2	6:23	6:34
21	12.1	6:26	6:30
22	12.0	6:28	6:27
23	11.9	6:31	6:23
24	11.8	6:34	6:20
25	11.7	6:36	6:16
26	11.6	6:39	6:13
27	11.5	6:42	6:09
28	11.4	6:45	6:06
29	11.3	6:47	6:03
30	11.1	6:50	5:59

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.16 kWh/m².

For context, solar energy here swings from a low near 0.09 kWh/m² to a high of 5.03 kWh/m² in June across the year — September's 2.16 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	2.8	2.8	2.7	2.7	2.6	2.6	2.5	2.5	2.5	2.4	2.4	2.3	2.3	2.2	2.2	2.1	2.1	2.1	2.0	2.0	1.9	1.9	1.9	1.8	1.8	1.7	1.7	1.6	1.6	1.6
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim

	Solar energy (kWh/m²)	Level
1	2.8	Moderate
2	2.8	Moderate
3	2.7	Moderate
4	2.7	Moderate
5	2.6	Moderate
6	2.6	Moderate
7	2.5	Moderate
8	2.5	Moderate
9	2.5	Moderate
10	2.4	Moderate
11	2.4	Moderate
12	2.3	Moderate
13	2.3	Moderate
14	2.2	Moderate
15	2.2	Moderate
16	2.1	Moderate
17	2.1	Moderate
18	2.1	Moderate
19	2.0	Moderate
20	2.0	Dim
21	1.9	Dim
22	1.9	Dim
23	1.9	Dim
24	1.8	Dim
25	1.8	Dim
26	1.7	Dim
27	1.7	Dim
28	1.6	Dim
29	1.6	Dim
30	1.6	Dim

Planning a trip in September

Is September a good time to visit Alesund?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.8

Sightseeing

3rd-best month of the year

—

Beach & pool

never really warm enough

September is a weaker month for outdoor sightseeing in Alesund.

What to pack for Alesund in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Alesund sees daytime highs around 13°C and nights near 10°C. Pack rain gear. Worth having: a warm layer. About 18 days see rain.

rain geara warm layer

Sea temperature near Alesund in September

The nearest coast averages about 14°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 17 km away) is warmest in August at about 15°C and coldest in March near 6°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	7	6	6	6	8	11	13	15	14	12	10	8
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	7	Bracing
Feb	6	Bracing
Mar	6	Bracing
Apr	6	Bracing
May	8	Bracing
Jun	11	Bracing
Jul	13	Bracing
Aug	15	Bracing
Sep	14	Bracing
Oct	12	Bracing
Nov	10	Bracing
Dec	8	Bracing

UV index in Alesund in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Alesund peaks around June 22 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	0	1	1	2	4	5	5	4	2	1	0	0
Level	Low	Low	Low	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Low	Low	Low

	UV index (midday)	Level
Jan	0	Low
Feb	1	Low
Mar	1	Low
Apr	2	Moderate
May	4	Moderate
Jun	5	Moderate
Jul	5	Moderate
Aug	4	Moderate
Sep	2	Moderate
Oct	1	Low
Nov	0	Low
Dec	0	Low

Location & terrain

Where is Alesund?

Alesund sits at 62.5°N, 6.2°E, 3 m above sea level, in Norway. The nearest listed city is Molde, 59 km away.

Topography around Alesund

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Alesund.

Within 3 km, the terrain around Alesund has significant variations in elevation — a maximum elevation change of 286 m around an average of 12 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 906 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,863 m.

The land around Alesund is covered by water (73%) within 3 km, water (63%) within 16 km, and water (46%), grassland (24%) and trees (21%) within 80 km.

3 km

286 m

water 73%

16 km

906 m

water 63%

80 km

1,863 m

water 46%

treesgrasslandartificial surfacesbare terrainsnow and icewatermoss and lichen

← August Alesund year-round climate October →Best places to visit in September

September weather nearby: Molde 59 km · Kristiansund 107 km · Flam 186 km · Bergen 235 km · Trondheim 239 km · Nesttun 243 km · Ytrebygda 245 km · Stjørdalshalsen 265 km

Norway travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 91% of US; price level, 2025
GDP per capita: $94,594; 2025
Happiness: 7.2 / 10; World Happiness, 2025
Safe drinking water: 99%; of population, 2024
Homicide rate: 0.7; per 100k, 2023
Road deaths: 2.1; per 100k/yr, 2019
Income group: High; World Bank
English: Very high; EF EPI 613
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Alesund (62.4723°, 6.1549°, elevation 3 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	14	11
2	14	11
3	14	11
4	14	11
5	14	11
6	14	11
7	14	11
8	14	11
9	13	10
10	13	10
11	13	10
12	13	10
13	13	10
14	13	10
15	13	10
16	13	10
17	13	10
18	13	10
19	13	10
20	12	9
21	12	9
22	12	9
23	12	9
24	12	9
25	12	9
26	12	9
27	12	9
28	12	9
29	11	8
30	11	8

	Clearer (%)	Cloudier (%)
1	25	75
2	25	75
3	26	74
4	26	74
5	27	73
6	27	73
7	27	73
8	27	73
9	28	72
10	29	71
11	29	71
12	29	71
13	29	71
14	29	71
15	28	72
16	29	71
17	29	71
18	29	71
19	29	71
20	30	70
21	30	70
22	30	70
23	30	70
24	30	70
25	30	70
26	29	71
27	29	71
28	29	71
29	29	71
30	29	71

	Rain chance (%)
1	64
2	64
3	64
4	64
5	64
6	63
7	63
8	63
9	62
10	62
11	62
12	62
13	62
14	61
15	61
16	61
17	61
18	60
19	60
20	60
21	60
22	60
23	60
24	60
25	60
26	60
27	61
28	61
29	61
30	62

	Dry (%)	Comfortable (%)
1	94	6
2	94	6
3	95	5
4	95	5
5	96	4
6	96	4
7	96	4
8	96	4
9	97	3
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	97	3
17	98	2
18	98	2
19	98	2
20	98	2
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

	Avg high (°C)	Avg low (°C)
1	14	11
2	14	11
3	14	11
4	14	11
5	14	11
6	14	11
7	14	11
8	14	11
9	13	10
10	13	10
11	13	10
12	13	10
13	13	10
14	13	10
15	13	10
16	13	10
17	13	10
18	13	10
19	13	10
20	12	9
21	12	9
22	12	9
23	12	9
24	12	9
25	12	9
26	12	9
27	12	9
28	12	9
29	11	8
30	11	8

	Clearer (%)	Cloudier (%)
1	25	75
2	25	75
3	26	74
4	26	74
5	27	73
6	27	73
7	27	73
8	27	73
9	28	72
10	29	71
11	29	71
12	29	71
13	29	71
14	29	71
15	28	72
16	29	71
17	29	71
18	29	71
19	29	71
20	30	70
21	30	70
22	30	70
23	30	70
24	30	70
25	30	70
26	29	71
27	29	71
28	29	71
29	29	71
30	29	71

	Rain chance (%)
1	64
2	64
3	64
4	64
5	64
6	63
7	63
8	63
9	62
10	62
11	62
12	62
13	62
14	61
15	61
16	61
17	61
18	60
19	60
20	60
21	60
22	60
23	60
24	60
25	60
26	60
27	61
28	61
29	61
30	62

	Dry (%)	Comfortable (%)
1	94	6
2	94	6
3	95	5
4	95	5
5	96	4
6	96	4
7	96	4
8	96	4
9	97	3
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	97	3
17	98	2
18	98	2
19	98	2
20	98	2
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

	Avg high (°C)	Avg low (°C)
1	14	11
2	14	11
3	14	11
4	14	11
5	14	11
6	14	11
7	14	11
8	14	11
9	13	10
10	13	10
11	13	10
12	13	10
13	13	10
14	13	10
15	13	10
16	13	10
17	13	10
18	13	10
19	13	10
20	12	9
21	12	9
22	12	9
23	12	9
24	12	9
25	12	9
26	12	9
27	12	9
28	12	9
29	11	8
30	11	8

	Clearer (%)	Cloudier (%)
1	25	75
2	25	75
3	26	74
4	26	74
5	27	73
6	27	73
7	27	73
8	27	73
9	28	72
10	29	71
11	29	71
12	29	71
13	29	71
14	29	71
15	28	72
16	29	71
17	29	71
18	29	71
19	29	71
20	30	70
21	30	70
22	30	70
23	30	70
24	30	70
25	30	70
26	29	71
27	29	71
28	29	71
29	29	71
30	29	71

	Rain chance (%)
1	64
2	64
3	64
4	64
5	64
6	63
7	63
8	63
9	62
10	62
11	62
12	62
13	62
14	61
15	61
16	61
17	61
18	60
19	60
20	60
21	60
22	60
23	60
24	60
25	60
26	60
27	61
28	61
29	61
30	62

	Dry (%)	Comfortable (%)
1	94	6
2	94	6
3	95	5
4	95	5
5	96	4
6	96	4
7	96	4
8	96	4
9	97	3
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	97	3
17	98	2
18	98	2
19	98	2
20	98	2
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0