Jämsä weather in August

In August, Jämsä sees average daytime highs of 19°C and overnight lows near 12°C, with 75 mm of rain across 12.5 wet days and about 15.7 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 17°C by the end. The sky is clear or mostly clear about 15% of the time in August, and the air most often feels dry.

Daylight stretches from about 17 h 06 min at the start of August to 14 h 12 min by month's end. Set against the rest of the year, August is Jämsä's 5th-clearest and 10th-windiest month. For the whole year in context, see Jämsä's year-round climate.

Daytime high: 19°; 2nd warmest
Overnight low: 12°; 11th coldest
Rainfall: 75 mm; 12.5 wet days
Daylight: 15 h 42 min; 4:33 AM – 8:13 PM
Cloud cover: 70%; 5th clearest
Wind: 11 km/h; 10th windiest
Solar energy: 3.7 kWh/m²
Travel score: 5.7; out of 10

Jämsä is urban area in Jämsä, Finland.

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

← July Jämsä year-round climate September →Best places to visit in August

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 17°C by the end.

A typical August day in Jämsä reaches about 19°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 24°C. Set against its neighbours, August runs about 2°C cooler than July and about 6°C warmer than September.

	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	31
Avg high (°C)	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	19	19	19	19	19	19	19	18	18	18	18	18	17	17	17	17
Avg low (°C)	13	13	13	13	13	13	13	13	13	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11	10	10	10	10

	Avg high (°C)	Avg low (°C)
1	21	13
2	21	13
3	21	13
4	21	13
5	21	13
6	21	13
7	21	13
8	21	13
9	21	13
10	20	12
11	20	12
12	20	12
13	20	12
14	20	12
15	20	12
16	19	12
17	19	12
18	19	12
19	19	11
20	19	11
21	19	11
22	19	11
23	18	11
24	18	11
25	18	11
26	18	11
27	18	11
28	17	10
29	17	10
30	17	10
31	17	10

How August really feels in Jämsä

Once humidity and wind are folded in, August 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

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

Jämsä weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 2nd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-4° / -9°	39	10.5	10.6	5.8	0.0
Feb	-4° / -9°	30	7.8	8.2	8.3	0.0
Mar	1° / -6°	31	8.5	8.2	11.3	0.0
Apr	7° / -1°	32	8.2	3.9	14.3	1.0
May	14° / 4°	42	9.3	0.3	17.2	4.3
Jun	19° / 9°	67	11.7	0	19	5.6
Jul	21° / 13°	78	12.6	0	18.3	6.0
Aug	19° / 12°	75	12.5	0	15.7	5.7
Sep	14° / 8°	56	10.8	0	12.6	3.7
Oct	7° / 3°	60	11.4	1.8	9.6	0.9
Nov	2° / -1°	50	11.2	6.5	6.7	0.0
Dec	-2° / -5°	46	11.7	10.2	5	0.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 68%. Skies tend to cloud over as the month goes on.

	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	31
Clearer (%)	39	39	39	38	36	36	35	35	35	35	34	34	33	34	33	33	32	32	32	31	31	31	29	29	29	28	28	28	26	25	25
Cloudier (%)	61	61	61	62	64	64	65	65	65	65	66	66	67	66	67	67	68	68	68	69	69	69	71	71	71	72	72	72	74	75	75

	Clearer (%)	Cloudier (%)
1	39	61
2	39	61
3	39	61
4	38	62
5	36	64
6	36	64
7	35	65
8	35	65
9	35	65
10	35	65
11	34	66
12	34	66
13	33	67
14	34	66
15	33	67
16	33	67
17	32	68
18	32	68
19	32	68
20	31	69
21	31	69
22	31	69
23	29	71
24	29	71
25	29	71
26	28	72
27	28	72
28	28	72
29	26	74
30	25	75
31	25	75

Chance of precipitation in August

Any precipitation

Jämsä gets around 75 mm of rain over 12.5 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 41% 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	31
Rain chance (%)	38	38	38	39	39	39	40	40	40	40	41	41	41	41	41	41	41	41	41	41	41	41	40	40	40	40	39	39	39	38	38

	Rain chance (%)
1	38
2	38
3	38
4	39
5	39
6	39
7	40
8	40
9	40
10	40
11	41
12	41
13	41
14	41
15	41
16	41
17	41
18	41
19	41
20	41
21	41
22	41
23	40
24	40
25	40
26	40
27	39
28	39
29	39
30	38
31	38

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 63% 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	31
Dry (%)	48	49	50	51	51	52	54	55	56	56	58	58	60	60	62	64	65	66	67	68	69	69	71	72	73	74	76	77	78	79	80
Comfortable (%)	37	37	37	36	36	36	35	35	34	34	33	33	32	32	31	31	30	30	29	29	28	28	27	26	25	24	23	22	21	20	19
Humid (%)	13	12	12	11	11	10	10	9	9	9	8	8	7	7	6	5	5	4	4	3	3	3	2	2	2	2	1	1	1	1	1
Muggy (%)	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	48	37	13	2
2	49	37	12	2
3	50	37	12	2
4	51	36	11	2
5	51	36	11	2
6	52	36	10	2
7	54	35	10	1
8	55	35	9	1
9	56	34	9	1
10	56	34	9	1
11	58	33	8	1
12	58	33	8	1
13	60	32	7	1
14	60	32	7	1
15	62	31	6	1
16	64	31	5	0
17	65	30	5	0
18	66	30	4	0
19	67	29	4	0
20	68	29	3	0
21	69	28	3	0
22	69	28	3	0
23	71	27	2	0
24	72	26	2	0
25	73	25	2	0
26	74	24	2	0
27	76	23	1	0
28	77	22	1	0
29	78	21	1	0
30	79	20	1	0
31	80	19	1	0

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 10 km/h on the calmest days to 12 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	31
Wind speed (km/h)	10	10	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	12	12	12	12
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	calm

	Wind speed (km/h)	Feels
1	10	calm
2	10	calm
3	11	calm
4	11	calm
5	11	calm
6	11	calm
7	11	calm
8	11	calm
9	11	calm
10	11	calm
11	11	calm
12	11	calm
13	11	calm
14	11	calm
15	11	calm
16	11	calm
17	11	calm
18	11	calm
19	11	calm
20	11	calm
21	11	calm
22	11	calm
23	11	calm
24	11	calm
25	11	calm
26	11	calm
27	11	calm
28	12	calm
29	12	calm
30	12	calm
31	12	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 17 h 06 min at the start of August to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 174 minutes over August. Sunrise moves from 3:53 AM to 5:14 AM, and sunset from 8:57 PM to 7:25 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	31
Daylight (h)	17.1	17.0	16.9	16.8	16.7	16.6	16.5	16.4	16.3	16.2	16.1	16.0	16.0	15.9	15.8	15.7	15.6	15.5	15.4	15.3	15.2	15.1	15.0	14.9	14.8	14.7	14.6	14.5	14.4	14.3	14.2
Sunrise (AM)	3:53	3:56	3:59	4:01	4:04	4:06	4:09	4:12	4:15	4:17	4:20	4:23	4:25	4:28	4:31	4:33	4:36	4:39	4:42	4:44	4:47	4:50	4:52	4:55	4:58	5:00	5:03	5:06	5:08	5:11	5:14
Sunset (PM)	8:57	8:55	8:52	8:49	8:46	8:43	8:40	8:37	8:35	8:32	8:29	8:26	8:22	8:19	8:16	8:13	8:10	8:07	8:04	8:01	7:57	7:54	7:51	7:48	7:45	7:41	7:38	7:35	7:31	7:28	7:25

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	17.1	3:53	8:57
2	17.0	3:56	8:55
3	16.9	3:59	8:52
4	16.8	4:01	8:49
5	16.7	4:04	8:46
6	16.6	4:06	8:43
7	16.5	4:09	8:40
8	16.4	4:12	8:37
9	16.3	4:15	8:35
10	16.2	4:17	8:32
11	16.1	4:20	8:29
12	16.0	4:23	8:26
13	16.0	4:25	8:22
14	15.9	4:28	8:19
15	15.8	4:31	8:16
16	15.7	4:33	8:13
17	15.6	4:36	8:10
18	15.5	4:39	8:07
19	15.4	4:42	8:04
20	15.3	4:44	8:01
21	15.2	4:47	7:57
22	15.1	4:50	7:54
23	15.0	4:52	7:51
24	14.9	4:55	7:48
25	14.8	4:58	7:45
26	14.7	5:00	7:41
27	14.6	5:03	7:38
28	14.5	5:06	7:35
29	14.4	5:08	7:31
30	14.3	5:11	7:28
31	14.2	5:14	7:25

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.7 kWh/m².

For context, solar energy here swings from a low near 0.1 kWh/m² to a high of 5.24 kWh/m² in June across the year — August's 3.7 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	31
Solar energy (kWh/m²)	4.5	4.4	4.4	4.3	4.3	4.3	4.2	4.2	4.1	4.0	4.0	3.9	3.9	3.8	3.8	3.7	3.7	3.6	3.5	3.5	3.4	3.4	3.3	3.3	3.2	3.1	3.1	3.0	3.0	2.9	2.8
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.5	Bright
2	4.4	Bright
3	4.4	Bright
4	4.3	Bright
5	4.3	Bright
6	4.3	Bright
7	4.2	Bright
8	4.2	Bright
9	4.1	Bright
10	4.0	Bright
11	4.0	Moderate
12	3.9	Moderate
13	3.9	Moderate
14	3.8	Moderate
15	3.8	Moderate
16	3.7	Moderate
17	3.7	Moderate
18	3.6	Moderate
19	3.5	Moderate
20	3.5	Moderate
21	3.4	Moderate
22	3.4	Moderate
23	3.3	Moderate
24	3.3	Moderate
25	3.2	Moderate
26	3.1	Moderate
27	3.1	Moderate
28	3.0	Moderate
29	3.0	Moderate
30	2.9	Moderate
31	2.8	Moderate

Planning a trip in August

Is August a good time to visit Jämsä?

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

5.7

Sightseeing

2nd-best month of the year

2.6

Beach & pool

2nd-best month of the year

August is a reasonable time to visit Jämsä for sightseeing.

What to pack for Jämsä in August

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

In August, Jämsä sees daytime highs around 19°C and nights near 12°C. Worth packing: rain gear. About 13 days see rain.

rain gear

UV index in Jämsä in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jämsä peaks around June 20 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 19 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	3	4	5	5	4	2	1	0	0
Level	Low	Low	Low	Moderate	Moderate	Moderate	Moderate	Moderate	Low	Low	Low	Low

	UV index (midday)	Level
Jan	0	Low
Feb	1	Low
Mar	1	Low
Apr	3	Moderate
May	4	Moderate
Jun	5	Moderate
Jul	5	Moderate
Aug	4	Moderate
Sep	2	Low
Oct	1	Low
Nov	0	Low
Dec	0	Low

Location & terrain

Where is Jämsä?

Jämsä sits at 61.9°N, 25.2°E, 83 m above sea level, in Finland. The nearest listed city is Jyväskylä, 50 km away.

Topography around Jämsä

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

Within 3 km, the terrain around Jämsä has only modest variations in elevation — a maximum elevation change of 97 m around an average of 100 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 156 m; within 80 km, only modest variations in elevation — a maximum elevation change of 199 m.

The land around Jämsä is covered by trees (56%) and cropland (28%) within 3 km, trees (77%) within 16 km, and trees (76%) within 80 km.

3 km

97 m

trees 56%

16 km

156 m

trees 77%

80 km

199 m

trees 76%

treesgrasslandcroplandartificial surfaceswater

← July Jämsä year-round climate September →Best places to visit in August

August weather nearby: Jyväskylä 50 km · Laukaa 73 km · Kangasala 74 km · Pohjois-Hervanta 84 km · Tampere 84 km · Hervanta 84 km · Heinola 86 km · Äänekoski 87 km

Finland travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 85% of US; price level, 2025
GDP per capita: $56,149; 2025
Happiness: 7.8 / 10; World Happiness, 2025
Safe drinking water: 100%; of population, 2024
Homicide rate: 1; per 100k, 2023
Road deaths: 3.9; per 100k/yr, 2019
Income group: High; World Bank
English: Very high; EF EPI 603
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 Jämsä (61.8642°, 25.19°, elevation 83 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. 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	21	13
2	21	13
3	21	13
4	21	13
5	21	13
6	21	13
7	21	13
8	21	13
9	21	13
10	20	12
11	20	12
12	20	12
13	20	12
14	20	12
15	20	12
16	19	12
17	19	12
18	19	12
19	19	11
20	19	11
21	19	11
22	19	11
23	18	11
24	18	11
25	18	11
26	18	11
27	18	11
28	17	10
29	17	10
30	17	10
31	17	10

	Clearer (%)	Cloudier (%)
1	39	61
2	39	61
3	39	61
4	38	62
5	36	64
6	36	64
7	35	65
8	35	65
9	35	65
10	35	65
11	34	66
12	34	66
13	33	67
14	34	66
15	33	67
16	33	67
17	32	68
18	32	68
19	32	68
20	31	69
21	31	69
22	31	69
23	29	71
24	29	71
25	29	71
26	28	72
27	28	72
28	28	72
29	26	74
30	25	75
31	25	75

	Rain chance (%)
1	38
2	38
3	38
4	39
5	39
6	39
7	40
8	40
9	40
10	40
11	41
12	41
13	41
14	41
15	41
16	41
17	41
18	41
19	41
20	41
21	41
22	41
23	40
24	40
25	40
26	40
27	39
28	39
29	39
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	48	37	13	2
2	49	37	12	2
3	50	37	12	2
4	51	36	11	2
5	51	36	11	2
6	52	36	10	2
7	54	35	10	1
8	55	35	9	1
9	56	34	9	1
10	56	34	9	1
11	58	33	8	1
12	58	33	8	1
13	60	32	7	1
14	60	32	7	1
15	62	31	6	1
16	64	31	5	0
17	65	30	5	0
18	66	30	4	0
19	67	29	4	0
20	68	29	3	0
21	69	28	3	0
22	69	28	3	0
23	71	27	2	0
24	72	26	2	0
25	73	25	2	0
26	74	24	2	0
27	76	23	1	0
28	77	22	1	0
29	78	21	1	0
30	79	20	1	0
31	80	19	1	0

	Avg high (°C)	Avg low (°C)
1	21	13
2	21	13
3	21	13
4	21	13
5	21	13
6	21	13
7	21	13
8	21	13
9	21	13
10	20	12
11	20	12
12	20	12
13	20	12
14	20	12
15	20	12
16	19	12
17	19	12
18	19	12
19	19	11
20	19	11
21	19	11
22	19	11
23	18	11
24	18	11
25	18	11
26	18	11
27	18	11
28	17	10
29	17	10
30	17	10
31	17	10

	Clearer (%)	Cloudier (%)
1	39	61
2	39	61
3	39	61
4	38	62
5	36	64
6	36	64
7	35	65
8	35	65
9	35	65
10	35	65
11	34	66
12	34	66
13	33	67
14	34	66
15	33	67
16	33	67
17	32	68
18	32	68
19	32	68
20	31	69
21	31	69
22	31	69
23	29	71
24	29	71
25	29	71
26	28	72
27	28	72
28	28	72
29	26	74
30	25	75
31	25	75

	Rain chance (%)
1	38
2	38
3	38
4	39
5	39
6	39
7	40
8	40
9	40
10	40
11	41
12	41
13	41
14	41
15	41
16	41
17	41
18	41
19	41
20	41
21	41
22	41
23	40
24	40
25	40
26	40
27	39
28	39
29	39
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	48	37	13	2
2	49	37	12	2
3	50	37	12	2
4	51	36	11	2
5	51	36	11	2
6	52	36	10	2
7	54	35	10	1
8	55	35	9	1
9	56	34	9	1
10	56	34	9	1
11	58	33	8	1
12	58	33	8	1
13	60	32	7	1
14	60	32	7	1
15	62	31	6	1
16	64	31	5	0
17	65	30	5	0
18	66	30	4	0
19	67	29	4	0
20	68	29	3	0
21	69	28	3	0
22	69	28	3	0
23	71	27	2	0
24	72	26	2	0
25	73	25	2	0
26	74	24	2	0
27	76	23	1	0
28	77	22	1	0
29	78	21	1	0
30	79	20	1	0
31	80	19	1	0

	Avg high (°C)	Avg low (°C)
1	21	13
2	21	13
3	21	13
4	21	13
5	21	13
6	21	13
7	21	13
8	21	13
9	21	13
10	20	12
11	20	12
12	20	12
13	20	12
14	20	12
15	20	12
16	19	12
17	19	12
18	19	12
19	19	11
20	19	11
21	19	11
22	19	11
23	18	11
24	18	11
25	18	11
26	18	11
27	18	11
28	17	10
29	17	10
30	17	10
31	17	10

	Clearer (%)	Cloudier (%)
1	39	61
2	39	61
3	39	61
4	38	62
5	36	64
6	36	64
7	35	65
8	35	65
9	35	65
10	35	65
11	34	66
12	34	66
13	33	67
14	34	66
15	33	67
16	33	67
17	32	68
18	32	68
19	32	68
20	31	69
21	31	69
22	31	69
23	29	71
24	29	71
25	29	71
26	28	72
27	28	72
28	28	72
29	26	74
30	25	75
31	25	75

	Rain chance (%)
1	38
2	38
3	38
4	39
5	39
6	39
7	40
8	40
9	40
10	40
11	41
12	41
13	41
14	41
15	41
16	41
17	41
18	41
19	41
20	41
21	41
22	41
23	40
24	40
25	40
26	40
27	39
28	39
29	39
30	38
31	38

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	48	37	13	2
2	49	37	12	2
3	50	37	12	2
4	51	36	11	2
5	51	36	11	2
6	52	36	10	2
7	54	35	10	1
8	55	35	9	1
9	56	34	9	1
10	56	34	9	1
11	58	33	8	1
12	58	33	8	1
13	60	32	7	1
14	60	32	7	1
15	62	31	6	1
16	64	31	5	0
17	65	30	5	0
18	66	30	4	0
19	67	29	4	0
20	68	29	3	0
21	69	28	3	0
22	69	28	3	0
23	71	27	2	0
24	72	26	2	0
25	73	25	2	0
26	74	24	2	0
27	76	23	1	0
28	77	22	1	0
29	78	21	1	0
30	79	20	1	0
31	80	19	1	0