Harstad weather in September

In September, Harstad sees average daytime highs of 11°C and overnight lows near 6°C, with 121 mm of precipitation across 17.1 wet days and about 12.9 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 13°C in the first days to 9°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 54 min at the start of September to 10 h 54 min by month's end. Set against the rest of the year, September is Harstad's 5th-clearest and 10th-windiest month. For the whole year in context, see Harstad's year-round climate.

Daytime high: 11°; 4th warmest
Overnight low: 6°; 9th coldest
Precipitation: 121 mm; 17.1 wet days
Daylight: 12 h 48 min; 5:24 AM – 6:12 PM
Cloud cover: 74%; 5th clearest
Wind: 10 km/h; 10th windiest
Solar energy: 1.71 kWh/m²
Travel score: 2.2; out of 10

Harstad is city in Harstad municipality, Norway.

Air quality: Good; PM2.5 6.1 µg/m³ · 2019
Density: 1,854/km²; people per km²
Founded: 1904

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

← August Harstad 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 13°C in the first days to 9°C by the end.

A typical September day in Harstad reaches about 11°C in the afternoon and slips back to 6°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 15°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°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)	13	13	13	13	13	13	13	12	12	12	12	12	12	11	11	11	11	11	11	10	10	10	10	10	9	9	9	9	9	9
Avg low (°C)	8	8	8	8	7	7	7	7	7	7	7	6	6	6	6	6	6	6	5	5	5	5	5	5	5	4	4	4	4	4

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

How September really feels in Harstad

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.

Harstad weather by month

How September compares with the rest of the year at a glance. September is the 4th-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° / -8°	108	15	15	1.4	0.0
Feb	-3° / -8°	94	14.2	14.7	6.7	0.0
Mar	0° / -6°	101	15.8	16	11	0.0
Apr	4° / -2°	78	14.6	11.9	15.3	0.1
May	9° / 3°	88	16	4.9	20.4	1.5
Jun	13° / 7°	91	15.4	0.2	24	2.9
Jul	16° / 10°	99	14.8	0	22.9	4.1
Aug	15° / 9°	102	16.1	0	17.3	3.8
Sep	11° / 6°	121	17.1	1.1	12.9	2.2
Oct	5° / 1°	116	16.9	6.9	8.6	0.4
Nov	2° / -3°	95	15.2	10.9	3.4	0.0
Dec	-1° / -6°	111	16	15.2	0	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 10% of September, with mostly cloudy or overcast conditions the remaining 75%.

	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 (%)	21	21	21	21	21	21	22	23	23	23	24	25	26	25	26	26	26	26	26	27	27	27	27	27	27	26	27	27	29	29
Cloudier (%)	79	79	79	79	79	79	78	77	77	77	76	75	74	75	74	74	74	74	74	73	73	73	73	73	73	74	73	73	71	71

	Clearer (%)	Cloudier (%)
1	21	79
2	21	79
3	21	79
4	21	79
5	21	79
6	21	79
7	22	78
8	23	77
9	23	77
10	23	77
11	24	76
12	25	75
13	26	74
14	25	75
15	26	74
16	26	74
17	26	74
18	26	74
19	26	74
20	27	73
21	27	73
22	27	73
23	27	73
24	27	73
25	27	73
26	26	74
27	27	73
28	27	73
29	29	71
30	29	71

Chance of precipitation in September

Any precipitationSnow

Harstad gets around 121 mm of rain and snow over 17.1 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 precipitation averages around 56% and peaks near 58% on the wettest days, and about 1 day brings snow.

	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 (%)	57	57	57	58	58	58	58	57	57	57	57	56	56	56	56	57	57	57	57	57	57	56	56	55	54	54	53	52	52	51
Snow chance (%)	0	0	0	0	0	0	0	1	1	1	1	1	2	2	2	3	3	4	4	5	5	6	6	6	7	7	7	8	8	8

	Rain chance (%)	Snow chance (%)
1	57	0
2	57	0
3	57	0
4	58	0
5	58	0
6	58	0
7	58	0
8	57	1
9	57	1
10	57	1
11	57	1
12	56	1
13	56	2
14	56	2
15	56	2
16	57	3
17	57	3
18	57	4
19	57	4
20	57	5
21	57	5
22	56	6
23	56	6
24	55	6
25	54	7
26	54	7
27	53	7
28	52	8
29	52	8
30	51	8

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 100% 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 (%)	99	99	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Comfortable (%)	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

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

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 10 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)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 14 h 54 min at the start of September to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 240 minutes over September. Sunrise moves from 4:26 AM to 6:18 AM, and sunset from 7:21 PM to 5:09 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)	14.9	14.8	14.6	14.5	14.3	14.2	14.1	13.9	13.8	13.6	13.5	13.4	13.2	13.1	12.9	12.8	12.7	12.5	12.4	12.2	12.1	12.0	11.8	11.7	11.5	11.4	11.3	11.1	11.0	10.9
Sunrise (AM)	4:26	4:30	4:34	4:38	4:42	4:46	4:50	4:54	4:58	5:01	5:05	5:09	5:13	5:17	5:20	5:24	5:28	5:32	5:36	5:39	5:43	5:47	5:51	5:55	5:58	6:02	6:06	6:10	6:14	6:18
Sunset (PM)	7:21	7:16	7:12	7:07	7:02	6:58	6:53	6:49	6:44	6:39	6:35	6:30	6:26	6:21	6:17	6:12	6:08	6:03	5:58	5:54	5:49	5:45	5:40	5:36	5:31	5:27	5:22	5:18	5:13	5:09

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.9	4:26	7:21
2	14.8	4:30	7:16
3	14.6	4:34	7:12
4	14.5	4:38	7:07
5	14.3	4:42	7:02
6	14.2	4:46	6:58
7	14.1	4:50	6:53
8	13.9	4:54	6:49
9	13.8	4:58	6:44
10	13.6	5:01	6:39
11	13.5	5:05	6:35
12	13.4	5:09	6:30
13	13.2	5:13	6:26
14	13.1	5:17	6:21
15	12.9	5:20	6:17
16	12.8	5:24	6:12
17	12.7	5:28	6:08
18	12.5	5:32	6:03
19	12.4	5:36	5:58
20	12.2	5:39	5:54
21	12.1	5:43	5:49
22	12.0	5:47	5:45
23	11.8	5:51	5:40
24	11.7	5:55	5:36
25	11.5	5:58	5:31
26	11.4	6:02	5:27
27	11.3	6:06	5:22
28	11.1	6:10	5:18
29	11.0	6:14	5:13
30	10.9	6:18	5:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 1.71 kWh/m².

For context, solar energy here swings from a low near 0 kWh/m² to a high of 4.93 kWh/m² in June across the year — September's 1.71 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)	2.4	2.3	2.3	2.2	2.2	2.1	2.1	2.0	2.0	2.0	1.9	1.9	1.8	1.8	1.7	1.7	1.6	1.6	1.6	1.5	1.5	1.4	1.4	1.4	1.3	1.3	1.3	1.2	1.2	1.1
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim

	Solar energy (kWh/m²)	Level
1	2.4	Moderate
2	2.3	Moderate
3	2.3	Moderate
4	2.2	Moderate
5	2.2	Moderate
6	2.1	Moderate
7	2.1	Moderate
8	2.0	Moderate
9	2.0	Moderate
10	2.0	Dim
11	1.9	Dim
12	1.9	Dim
13	1.8	Dim
14	1.8	Dim
15	1.7	Dim
16	1.7	Dim
17	1.6	Dim
18	1.6	Dim
19	1.6	Dim
20	1.5	Dim
21	1.5	Dim
22	1.4	Dim
23	1.4	Dim
24	1.4	Dim
25	1.3	Dim
26	1.3	Dim
27	1.3	Dim
28	1.2	Dim
29	1.2	Dim
30	1.1	Dim

Planning a trip in September

Is September a good time to visit Harstad?

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

2.2

Sightseeing

4th-best month of the year

—

Beach & pool

never really warm enough

September is a weaker month for outdoor sightseeing in Harstad.

What to pack for Harstad in September

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

In September, Harstad sees daytime highs around 11°C and nights near 6°C. Pack a warm layer and rain gear. About 17 days see rain.

a warm layerrain gear

Sea temperature near Harstad in September

The nearest coast averages about 11°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 12°C and coldest in March near 3°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)	5	4	3	4	6	9	11	12	11	9	7	6
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	5	Bracing
Feb	4	Bracing
Mar	3	Bracing
Apr	4	Bracing
May	6	Bracing
Jun	9	Bracing
Jul	11	Bracing
Aug	12	Bracing
Sep	11	Bracing
Oct	9	Bracing
Nov	7	Bracing
Dec	6	Bracing

UV index in Harstad in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Harstad 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 2 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	0	0	1	2	3	3	4	3	1	0	0	0
Level	Low	Low	Low	Low	Moderate	Moderate	Moderate	Moderate	Low	Low	Low	Low

	UV index (midday)	Level
Jan	0	Low
Feb	0	Low
Mar	1	Low
Apr	2	Low
May	3	Moderate
Jun	3	Moderate
Jul	4	Moderate
Aug	3	Moderate
Sep	1	Low
Oct	0	Low
Nov	0	Low
Dec	0	Low

Location & terrain

Where is Harstad?

Harstad sits at 68.8°N, 16.5°E, 1 m above sea level, in Norway. The nearest listed city is Lofoten, 102 km away.

Topography around Harstad

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

Within 3 km, the terrain around Harstad has significant variations in elevation — a maximum elevation change of 338 m around an average of 59 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 983 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,766 m.

The land around Harstad is covered by trees (47%) and water (34%) within 3 km, water (52%) and trees (25%) within 16 km, and water (45%), trees (21%) and grassland (21%) within 80 km.

3 km

338 m

trees 47%

16 km

983 m

water 52%

80 km

1,766 m

water 45%

treesgrasslandartificial surfacesbare terrainsnow and icewaterwetlandmoss and lichen

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

September weather nearby: Lofoten 102 km · Tromso 134 km · Tromsdalen 136 km · Kiruna 184 km · Bodø 191 km · Alta 294 km · Mo i Rana 294 km · Levi 357 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 Harstad (68.7983°, 16.5417°, elevation 1 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	13	8
2	13	8
3	13	8
4	13	8
5	13	7
6	13	7
7	13	7
8	12	7
9	12	7
10	12	7
11	12	7
12	12	6
13	12	6
14	11	6
15	11	6
16	11	6
17	11	6
18	11	6
19	11	5
20	10	5
21	10	5
22	10	5
23	10	5
24	10	5
25	9	5
26	9	4
27	9	4
28	9	4
29	9	4
30	9	4

	Clearer (%)	Cloudier (%)
1	21	79
2	21	79
3	21	79
4	21	79
5	21	79
6	21	79
7	22	78
8	23	77
9	23	77
10	23	77
11	24	76
12	25	75
13	26	74
14	25	75
15	26	74
16	26	74
17	26	74
18	26	74
19	26	74
20	27	73
21	27	73
22	27	73
23	27	73
24	27	73
25	27	73
26	26	74
27	27	73
28	27	73
29	29	71
30	29	71

	Rain chance (%)	Snow chance (%)
1	57	0
2	57	0
3	57	0
4	58	0
5	58	0
6	58	0
7	58	0
8	57	1
9	57	1
10	57	1
11	57	1
12	56	1
13	56	2
14	56	2
15	56	2
16	57	3
17	57	3
18	57	4
19	57	4
20	57	5
21	57	5
22	56	6
23	56	6
24	55	6
25	54	7
26	54	7
27	53	7
28	52	8
29	52	8
30	51	8

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

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

	Clearer (%)	Cloudier (%)
1	21	79
2	21	79
3	21	79
4	21	79
5	21	79
6	21	79
7	22	78
8	23	77
9	23	77
10	23	77
11	24	76
12	25	75
13	26	74
14	25	75
15	26	74
16	26	74
17	26	74
18	26	74
19	26	74
20	27	73
21	27	73
22	27	73
23	27	73
24	27	73
25	27	73
26	26	74
27	27	73
28	27	73
29	29	71
30	29	71

	Rain chance (%)	Snow chance (%)
1	57	0
2	57	0
3	57	0
4	58	0
5	58	0
6	58	0
7	58	0
8	57	1
9	57	1
10	57	1
11	57	1
12	56	1
13	56	2
14	56	2
15	56	2
16	57	3
17	57	3
18	57	4
19	57	4
20	57	5
21	57	5
22	56	6
23	56	6
24	55	6
25	54	7
26	54	7
27	53	7
28	52	8
29	52	8
30	51	8

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

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

	Clearer (%)	Cloudier (%)
1	21	79
2	21	79
3	21	79
4	21	79
5	21	79
6	21	79
7	22	78
8	23	77
9	23	77
10	23	77
11	24	76
12	25	75
13	26	74
14	25	75
15	26	74
16	26	74
17	26	74
18	26	74
19	26	74
20	27	73
21	27	73
22	27	73
23	27	73
24	27	73
25	27	73
26	26	74
27	27	73
28	27	73
29	29	71
30	29	71

	Rain chance (%)	Snow chance (%)
1	57	0
2	57	0
3	57	0
4	58	0
5	58	0
6	58	0
7	58	0
8	57	1
9	57	1
10	57	1
11	57	1
12	56	1
13	56	2
14	56	2
15	56	2
16	57	3
17	57	3
18	57	4
19	57	4
20	57	5
21	57	5
22	56	6
23	56	6
24	55	6
25	54	7
26	54	7
27	53	7
28	52	8
29	52	8
30	51	8

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