Luleå, Sweden climate

Dfc Subarctic

Luleå has a strongly seasonal cold-temperate climate (Subarctic, Köppen Dfc). The hottest month is July with an average daily high near 69°F, while the coldest is January averaging around 10°F at night. Around 24 inches of precipitation falls each year, peaking in August (2.6 inches) and easing off in March (1.2 inches). At latitude 66°N, day length swings from 2.4 hours in midwinter to 21.6 hours at midsummer.

☀️ Summers

Mild

Highs near 69°F in July.

❄️ Winters

Very cold

Lows near 10°F in January.

About 168 freezing nights a year

🌧️ Rain

Moderate rainfall

About 24 in of rain a year.

Wettest in August

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

+3.7 °F vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Luleå climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	23	23	32	43	54	63	69	65	56	42	32	27
Avg temp (°F)	16	16	25	35	46	56	62	58	50	37	27	21
Avg low (°F)	10	10	18	28	38	49	55	52	44	32	23	15
Precipitation (in)	2.2	1.4	1.2	1.3	1.6	2.1	2.3	2.6	2.5	2.1	2.3	2.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	23	23	32	43	54	63
Avg temp (°F)	16	16	25	35	46	56
Avg low (°F)	10	10	18	28	38	49
Precipitation (in)	2.2	1.4	1.2	1.3	1.6	2.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	69	65	56	42	32	27
Avg temp (°F)	62	58	50	37	27	21
Avg low (°F)	55	52	44	32	23	15
Precipitation (in)	2.3	2.6	2.5	2.1	2.3	2.4

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	15	12	10	8	10	10	11	11	12	13	15	16
Days with low ≤ 32°F (days)	26	25	26	22	6	0.1	—	0.1	2	14	24	23

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	15	12	10	8	10	10
Days with low ≤ 32°F (days)	26	25	26	22	6	0.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	11	11	12	13	15	16
Days with low ≤ 32°F (days)	—	0.1	2	14	24	23

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	77	73	69	69	65	66	64	66	69	75	77	78
Clear days (≤ 30% cloud)	0.7	1	2	2	3	3	5	4	3	2	1	0.3
Partly cloudy days (30–70%)	9	10	13	12	14	12	12	12	10	10	9	10
Cloudy days (≥ 70%)	21	17	16	16	14	15	15	16	17	20	20	21
Relative humidity (%)	99	99	97	88	78	75	78	82	87	93	97	98
Wind speed (mph)	3.8	3.4	3.2	2.7	2.4	2.3	2.5	3.0	3.5	3.6	3.7	3.9

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	77	73	69	69	65	66
Clear days (≤ 30% cloud)	0.7	1	2	2	3	3
Partly cloudy days (30–70%)	9	10	13	12	14	12
Cloudy days (≥ 70%)	21	17	16	16	14	15
Relative humidity (%)	99	99	97	88	78	75
Wind speed (mph)	3.8	3.4	3.2	2.7	2.4	2.3

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	64	66	69	75	77	78
Clear days (≤ 30% cloud)	5	4	3	2	1	0.3
Partly cloudy days (30–70%)	12	12	10	10	9	10
Cloudy days (≥ 70%)	15	16	17	20	20	21
Relative humidity (%)	78	82	87	93	97	98
Wind speed (mph)	2.5	3.0	3.5	3.6	3.7	3.9

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 16 years of daily observations at Lulea-bergnaset, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →