Nørresundby weather in September

In September, Nørresundby sees average daytime highs of 17°C and overnight lows near 10°C, with 61 mm of rain across 10.8 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 15°C by the end. The sky is clear or mostly clear about 20% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of September to 11 h 18 min by month's end. Set against the rest of the year, September is Nørresundby's 6th-clearest and 7th-windiest month. For the whole year in context, see Nørresundby's year-round climate.

Daytime high
17°
4th warmest
Overnight low
10°
9th coldest
Rainfall
61 mm
10.8 wet days
Daylight
12 h 30 min
6:00 AM – 6:29 PM
Cloud cover
67%
6th clearest
Wind
15 km/h
7th windiest
Solar energy
2.81 kWh/m²
Travel score
5.0
out of 10

Nørresundby is human settlement.

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 18°C in the first days to 15°C by the end.

A typical September day in Nørresundby reaches about 17°C in the afternoon and slips back to 10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 20°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11911
21811
31811
41811
51811
61811
71811
81811
91811
101711
111711
121710
131710
141710
151710
161710
171610
181610
191610
201610
21169
22169
23169
24159
25159
26159
27159
28159
29159
30148

How September really feels in Nørresundby

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.

Nørresundby 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 / -1°5711.54.27.10.0
Feb / -1°439.34.190.0
Mar / 4410.32.911.40.6
Apr11° / 46100.513.92.7
May15° / 6210.9016.24.6
Jun18° / 10°7711.6017.55.7
Jul21° / 13°7211.6016.96.2
Aug20° / 13°7912.60156.0
Sep17° / 10°6110.8012.55.0
Oct12° / 7212.10.1102.9
Nov / 54110.97.81.0
Dec / 5411.42.86.50.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23862
33862
43862
53862
63862
73862
83862
94060
104060
114159
124060
133961
143961
154060
164060
174060
183862
193862
203862
213862
223862
233763
243763
253763
263763
273664
283664
293763
303763

Chance of precipitation in September

Any precipitation

Nørresundby gets around 61 mm of rain over 10.8 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 37% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
240
340
439
539
639
739
838
938
1038
1138
1238
1337
1437
1537
1636
1736
1836
1935
2035
2135
2234
2334
2434
2535
2635
2735
2836
2936
3037

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 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
171263
272253
374242
474242
575232
675232
777221
878211
979201
1080191
1180191
1281181
1382171
1483161
1585150
1686140
1787130
1888120
1989110
2090100
2190100
229190
239190
249280
259280
269280
279370
289370
299460
309460

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 42 min at the start of September to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 144 minutes over September. Sunrise moves from 5:29 AM to 6:30 AM, and sunset from 7:11 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:297:11
213.65:317:09
313.55:337:06
413.55:357:03
513.45:377:00
613.35:396:57
713.25:416:55
813.15:436:52
913.15:466:49
1013.05:486:46
1112.95:506:43
1212.85:526:40
1312.75:546:38
1412.65:566:35
1512.65:586:32
1612.56:006:29
1712.46:026:26
1812.36:056:23
1912.26:076:20
2012.16:096:18
2112.16:116:15
2212.06:136:12
2311.96:156:09
2411.86:176:06
2511.76:196:03
2611.66:226:00
2711.66:245:58
2811.56:265:55
2911.46:285:52
3011.36:305:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.81 kWh/m².

For context, solar energy here swings from a low near 0.33 kWh/m² to a high of 5.98 kWh/m² in June across the year — September's 2.81 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.6Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.4Moderate
63.3Moderate
73.3Moderate
83.2Moderate
93.1Moderate
103.1Moderate
113.0Moderate
123.0Moderate
132.9Moderate
142.9Moderate
152.8Moderate
162.8Moderate
172.7Moderate
182.7Moderate
192.6Moderate
202.6Moderate
212.5Moderate
222.5Moderate
232.4Moderate
242.4Moderate
252.3Moderate
262.3Moderate
272.2Moderate
282.2Moderate
292.1Moderate
302.1Moderate
Planning a trip in September

Is September a good time to visit Nørresundby?

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

5.0
Sightseeing
4th-best month of the year
1.0
Beach & pool
4th-best month of the year

September is a reasonable time to visit Nørresundby for sightseeing.

What to pack for Nørresundby in September

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

In September, Nørresundby sees daytime highs around 17°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Nørresundby in September

The nearest coast averages about 15°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 28 km away) is warmest in August at about 18°C and coldest in February near 3°C.

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

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan3Bracing
Feb3Bracing
Mar4Bracing
Apr7Bracing
May11Bracing
Jun15Bracing
Jul17Cool
Aug18Cool
Sep15Cool
Oct12Bracing
Nov8Bracing
Dec5Bracing

UV index in Nørresundby in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nørresundby peaks around June 18 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 18UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May5Moderate
Jun5Moderate
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Nørresundby?

Nørresundby sits at 57.1°N, 9.9°E, 10 m above sea level, in Denmark. The nearest listed city is Aalborg, 1.0 km away.

HjørringFrederikshavnRandersViborgSkiveSkagenTilst

Topography around Nørresundby

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

Within 3 km, the terrain around Nørresundby has only modest variations in elevation — a maximum elevation change of 73 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 101 m; within 80 km, only modest variations in elevation — a maximum elevation change of 142 m.

The land around Nørresundby is covered by artificial surfaces (39%), grassland (22%) and trees (20%) within 3 km, cropland (41%) and grassland (28%) within 16 km, and water (48%) and cropland (26%) within 80 km.

3 km
73 m
16 km
101 m
80 km
142 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Aalborg 1.0 km · Hjørring 45 km · Frederikshavn 56 km · Randers 67 km · Viborg 74 km · Skive 77 km · Skagen 84 km · Tilst 97 km

Denmark travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E / F / K
230 V · 50 Hz
Prices
≈ 92% of US
price level, 2025
GDP per capita
$76,970
2025
Happiness
7.5 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
3.7
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 611
Religion
Evangelical Lutheran 71%other/none/unspecified 24%Muslim 4%

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 Nørresundby (57.0588°, 9.9228°, elevation 10 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).