Umeå weather in September

In September, Umeå sees average daytime highs of 13°C and overnight lows near 8°C, with 62 mm of rain across 10 wet days and about 12.7 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 15°C in the first days to 10°C by the end. The sky is clear or mostly clear about 22% of the time in September, and the air most often feels dry.

Daylight stretches from about 14 h 18 min at the start of September to 11 h 06 min by month's end. Set against the rest of the year, September is Umeå's 6th-clearest and 7th-windiest month. For the whole year in context, see Umeå's year-round climate.

Daytime high
13°
4th warmest
Overnight low
9th coldest
Rainfall
62 mm
10 wet days
Daylight
12 h 36 min
5:14 AM – 5:52 PM
Cloud cover
66%
6th clearest
Wind
16 km/h
7th windiest
Solar energy
2.37 kWh/m²
Travel score
3.4
out of 10

Umeå is urban area in Umeå Municipality, Sweden.

Air quality
Excellent
PM2.5 4.3 µg/m³ · 2019
Founded
1622

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 15°C in the first days to 10°C by the end.

A typical September day in Umeå reaches about 13°C in the afternoon and slips back to 8°C overnight — a 5°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 4°C cooler than August and about 6°C warmer than October.

10°15°20°151015202530
Avg high (°C)Avg low (°C)
11511
21510
31510
41510
51510
61410
71410
81410
9149
10149
11149
12139
13139
14139
15138
16138
17138
18128
19128
20128
21127
22127
23117
24117
25117
26117
27116
28106
29106
30106

How September really feels in Umeå

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
0
heat index over the day's high
Days feeling ≤ C
0
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.

Umeå weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -7°4910.210.55.10.0
Feb-3° / -8°367.98.880.0
Mar-0° / -5°358.17.811.20.0
Apr / -1°357.74.314.50.1
May / 428.70.417.82.0
Jun14° / 589.80204.0
Jul18° / 13°7412.30195.5
Aug17° / 12°7510.90165.3
Sep13° / 6210012.73.4
Oct / 7211.22.19.30.7
Nov / -1°6912.26.76.10.0
Dec-1° / -5°62129.740.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
23961
33961
44060
53961
64060
74060
84060
94060
103961
113961
123961
133961
143862
153862
163862
173862
183862
193961
203862
213862
223862
233862
243862
253862
263862
273862
283862
293862
303862

Chance of precipitation in September

Any precipitation

Umeå gets around 62 mm of rain over 10 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
435
535
635
735
835
935
1035
1135
1235
1335
1435
1535
1635
1735
1835
1934
2034
2134
2233
2333
2433
2533
2633
2734
2834
2934
3035

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
184151
286140
387130
488120
590100
69190
79280
89370
99460
109460
119550
129640
139640
149730
159820
169820
179820
189910
199910
209910
219910
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000

Wind in September

Winds average 16 km/h in September.

Across September, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 14 h 18 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 192 minutes over September. Sunrise moves from 4:31 AM to 5:55 AM, and sunset from 6:47 PM to 5:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:316:47
214.24:336:43
314.14:366:40
413.94:396:36
513.84:426:32
613.74:456:29
713.64:486:25
813.54:516:21
913.44:546:18
1013.34:576:14
1113.25:006:10
1213.15:036:07
1313.05:066:03
1412.85:095:59
1512.75:115:56
1612.65:145:52
1712.55:175:49
1812.45:205:45
1912.35:235:41
2012.25:265:38
2112.15:295:34
2212.05:325:30
2311.95:355:27
2411.85:385:23
2511.65:415:19
2611.55:445:16
2711.45:475:12
2811.35:495:08
2911.25:525:05
3011.15:555:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.37 kWh/m².

For context, solar energy here swings from a low near 0.05 kWh/m² to a high of 5.84 kWh/m² in June across the year — September's 2.37 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.0Moderate
43.0Moderate
52.9Moderate
62.9Moderate
72.8Moderate
82.8Moderate
92.7Moderate
102.7Moderate
112.6Moderate
122.5Moderate
132.5Moderate
142.4Moderate
152.4Moderate
162.3Moderate
172.3Moderate
182.2Moderate
192.2Moderate
202.1Moderate
212.1Moderate
222.0Moderate
231.9Dim
241.9Dim
251.8Dim
261.8Dim
271.7Dim
281.7Dim
291.6Dim
301.6Dim
Planning a trip in September

Is September a good time to visit Umeå?

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

3.4
Sightseeing
4th-best month of the year
0.0
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in Umeå.

What to pack for Umeå in September

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

In September, Umeå sees daytime highs around 13°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

Sea temperature near Umeå in September

The nearest coast averages about 13°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 23 km away) is warmest in August at about 16°C and coldest in February near 0°C.

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

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan1Bracing
Feb0Bracing
Mar0Bracing
Apr2Bracing
May5Bracing
Jun10Bracing
Jul15Bracing
Aug16Cool
Sep13Bracing
Oct8Bracing
Nov5Bracing
Dec3Bracing

UV index in Umeå 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 Umeå peaks around July 14 at about 4 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 14UV 4Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr3Moderate
May4Moderate
Jun4Moderate
Jul4Moderate
Aug4Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Umeå?

Umeå sits at 63.8°N, 20.3°E, 24 m above sea level, in Sweden. The nearest listed city is Örnsköldsvik, 97 km away.

ÖrnsköldsvikVaasaKorsholmSkellefteåJakobstadKokkolaKauhavaSeinäjoki

Topography around Umeå

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

Within 3 km, the terrain around Umeå has only modest variations in elevation — a maximum elevation change of 81 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 197 m; within 80 km, significant variations in elevation — a maximum elevation change of 486 m.

The land around Umeå is covered by trees (39%) and artificial surfaces (38%) within 3 km, trees (68%) within 16 km, and trees (50%) and water (43%) within 80 km.

3 km
81 m
16 km
197 m
80 km
486 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Örnsköldsvik 97 km · Vaasa 106 km · Korsholm 106 km · Skellefteå 108 km · Jakobstad 121 km · Kokkola 141 km · Kauhava 161 km · Seinäjoki 172 km

Sweden travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 87% of US
price level, 2025
GDP per capita
$63,133
2025
Happiness
7.3 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
3.1
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 609
Religion
Church of Sweden 54%none or unspecified 37%other 9%

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 Umeå (63.8284°, 20.2597°, elevation 24 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).