Muhu weather in September

In September, Muhu sees average daytime highs of 16°C and overnight lows near 12°C, with 54 mm of rain across 10.1 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 13°C by the end. The sky is clear or mostly clear about 23% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of September to 11 h 18 min by month's end. Set against the rest of the year, September is Muhu's 6th-clearest and 6th-windiest month. For the whole year in context, see Muhu's year-round climate.

Daytime high: 16°; 4th warmest
Overnight low: 12°; 9th coldest
Rainfall: 54 mm; 10.1 wet days
Daylight: 12 h 30 min; 6:06 AM – 6:37 PM
Cloud cover: 63%; 6th clearest
Wind: 21 km/h; 6th windiest
Solar energy: 2.69 kWh/m²
Travel score: 4.7; out of 10

Muhu is village in Muhu Rural Municipality, Saare County, Estonia.

Founded: 1267

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

← August Muhu 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 18°C in the first days to 13°C by the end.

A typical September day in Muhu reaches about 16°C in the afternoon and slips back to 12°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 19°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)	18	18	18	18	17	17	17	17	17	17	16	16	16	16	16	15	15	15	15	15	15	14	14	14	14	14	14	13	13	13
Avg low (°C)	14	14	14	13	13	13	13	13	13	13	12	12	12	12	12	12	11	11	11	11	11	11	11	10	10	10	10	10	10	10

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

How September really feels in Muhu

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.

Muhu 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-0° / -3°	44	11.2	7.7	6.8	0.0
Feb	-1° / -5°	38	9.4	7	8.8	0.0
Mar	2° / -2°	33	7.9	5.4	11.4	0.0
Apr	7° / 2°	34	8.2	1.6	14	0.9
May	12° / 7°	34	7.6	0.1	16.5	3.6
Jun	17° / 12°	56	9.5	0	17.9	5.6
Jul	20° / 16°	60	9.5	0	17.3	6.6
Aug	20° / 15°	70	11.7	0	15.2	6.1
Sep	16° / 12°	54	10.1	0	12.5	4.7
Oct	10° / 7°	65	12.5	0.3	9.9	2.1
Nov	6° / 3°	59	11.5	2.7	7.5	0.3
Dec	2° / -1°	50	12.4	6.6	6.1	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% 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 59%.

	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 (%)	43	43	42	43	43	43	43	44	44	44	44	44	44	44	43	43	42	42	42	40	40	39	38	38	36	36	36	36	35	34
Cloudier (%)	57	57	58	57	57	57	57	56	56	56	56	56	56	56	57	57	58	58	58	60	60	61	62	62	64	64	64	64	65	66

	Clearer (%)	Cloudier (%)
1	43	57
2	43	57
3	42	58
4	43	57
5	43	57
6	43	57
7	43	57
8	44	56
9	44	56
10	44	56
11	44	56
12	44	56
13	44	56
14	44	56
15	43	57
16	43	57
17	42	58
18	42	58
19	42	58
20	40	60
21	40	60
22	39	61
23	38	62
24	38	62
25	36	64
26	36	64
27	36	64
28	36	64
29	35	65
30	34	66

Chance of precipitation in September

Any precipitation

Muhu gets around 54 mm of rain over 10.1 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 34% and peaks near 37% 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
Rain chance (%)	37	37	36	36	36	35	35	35	34	34	34	34	33	33	33	33	33	33	33	33	33	33	33	33	33	33	34	34	35	36

	Rain chance (%)
1	37
2	37
3	36
4	36
5	36
6	35
7	35
8	35
9	34
10	34
11	34
12	34
13	33
14	33
15	33
16	33
17	33
18	33
19	33
20	33
21	33
22	33
23	33
24	33
25	33
26	33
27	34
28	34
29	35
30	36

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 80% 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 (%)	59	60	61	63	64	66	67	69	71	73	74	76	79	81	82	84	86	87	88	89	90	91	91	92	92	93	93	94	94	95
Comfortable (%)	36	36	35	34	33	32	31	30	28	26	25	23	21	19	18	16	14	13	12	11	10	9	9	8	8	7	7	6	6	5
Humid (%)	5	4	4	3	3	2	2	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	59	36	5
2	60	36	4
3	61	35	4
4	63	34	3
5	64	33	3
6	66	32	2
7	67	31	2
8	69	30	1
9	71	28	1
10	73	26	1
11	74	25	1
12	76	23	1
13	79	21	0
14	81	19	0
15	82	18	0
16	84	16	0
17	86	14	0
18	87	13	0
19	88	12	0
20	89	11	0
21	90	10	0
22	91	9	0
23	91	9	0
24	92	8	0
25	92	8	0
26	93	7	0
27	93	7	0
28	94	6	0
29	94	6	0
30	95	5	0

Wind in September

Winds average 21 km/h in September.

Across September, daily wind ranges from about 19 km/h on the calmest days to 22 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)	19	19	19	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	22	22	22	22	22
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 48 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 150 minutes over September. Sunrise moves from 5:32 AM to 6:38 AM, and sunset from 7:21 PM to 5:55 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)	13.8	13.7	13.6	13.6	13.5	13.4	13.3	13.2	13.1	13.0	12.9	12.9	12.8	12.7	12.6	12.5	12.4	12.3	12.2	12.2	12.1	12.0	11.9	11.8	11.7	11.6	11.5	11.4	11.4	11.3
Sunrise (AM)	5:32	5:34	5:37	5:39	5:41	5:43	5:46	5:48	5:50	5:53	5:55	5:57	5:59	6:02	6:04	6:06	6:08	6:11	6:13	6:15	6:17	6:20	6:22	6:24	6:27	6:29	6:31	6:34	6:36	6:38
Sunset (PM)	7:21	7:18	7:15	7:12	7:10	7:07	7:04	7:01	6:58	6:55	6:52	6:49	6:46	6:43	6:40	6:37	6:34	6:31	6:27	6:24	6:21	6:18	6:15	6:12	6:09	6:06	6:03	6:00	5:57	5:55

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.8	5:32	7:21
2	13.7	5:34	7:18
3	13.6	5:37	7:15
4	13.6	5:39	7:12
5	13.5	5:41	7:10
6	13.4	5:43	7:07
7	13.3	5:46	7:04
8	13.2	5:48	7:01
9	13.1	5:50	6:58
10	13.0	5:53	6:55
11	12.9	5:55	6:52
12	12.9	5:57	6:49
13	12.8	5:59	6:46
14	12.7	6:02	6:43
15	12.6	6:04	6:40
16	12.5	6:06	6:37
17	12.4	6:08	6:34
18	12.3	6:11	6:31
19	12.2	6:13	6:27
20	12.2	6:15	6:24
21	12.1	6:17	6:21
22	12.0	6:20	6:18
23	11.9	6:22	6:15
24	11.8	6:24	6:12
25	11.7	6:27	6:09
26	11.6	6:29	6:06
27	11.5	6:31	6:03
28	11.4	6:34	6:00
29	11.4	6:36	5:57
30	11.3	6:38	5:55

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.69 kWh/m².

For context, solar energy here swings from a low near 0.22 kWh/m² to a high of 5.98 kWh/m² in June across the year — September's 2.69 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)	3.4	3.4	3.3	3.3	3.2	3.2	3.1	3.1	3.0	3.0	2.9	2.9	2.8	2.8	2.7	2.7	2.6	2.6	2.5	2.5	2.4	2.4	2.3	2.3	2.2	2.2	2.1	2.1	2.0	2.0
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Dim

	Solar energy (kWh/m²)	Level
1	3.4	Moderate
2	3.4	Moderate
3	3.3	Moderate
4	3.3	Moderate
5	3.2	Moderate
6	3.2	Moderate
7	3.1	Moderate
8	3.1	Moderate
9	3.0	Moderate
10	3.0	Moderate
11	2.9	Moderate
12	2.9	Moderate
13	2.8	Moderate
14	2.8	Moderate
15	2.7	Moderate
16	2.7	Moderate
17	2.6	Moderate
18	2.6	Moderate
19	2.5	Moderate
20	2.5	Moderate
21	2.4	Moderate
22	2.4	Moderate
23	2.3	Moderate
24	2.3	Moderate
25	2.2	Moderate
26	2.2	Moderate
27	2.1	Moderate
28	2.1	Moderate
29	2.0	Moderate
30	2.0	Dim

Planning a trip in September

Is September a good time to visit Muhu?

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

4.7

Sightseeing

4th-best month of the year

0.6

Beach & pool

4th-best month of the year

September is a reasonable time to visit Muhu for sightseeing.

What to pack for Muhu in September

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

In September, Muhu sees daytime highs around 16°C and nights near 12°C. Worth packing: a warm layer, rain gear and a windbreaker. About 10 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Muhu 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 offshore is warmest in August at about 18°C and coldest in February near 1°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)	2	1	1	3	8	13	17	18	15	11	8	5
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Bracing	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	2	Bracing
Feb	1	Bracing
Mar	1	Bracing
Apr	3	Bracing
May	8	Bracing
Jun	13	Bracing
Jul	17	Cool
Aug	18	Cool
Sep	15	Bracing
Oct	11	Bracing
Nov	8	Bracing
Dec	5	Bracing

UV index in Muhu 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 Muhu peaks around June 18 at about 5 (high) — 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	2	3	4	6	5	5	3	1	0	0
Level	Low	Low	Low	Moderate	Moderate	High	Moderate	Moderate	Moderate	Low	Low	Low

	UV index (midday)	Level
Jan	0	Low
Feb	1	Low
Mar	2	Low
Apr	3	Moderate
May	4	Moderate
Jun	6	High
Jul	5	Moderate
Aug	5	Moderate
Sep	3	Moderate
Oct	1	Low
Nov	0	Low
Dec	0	Low

Location & terrain

Where is Muhu?

Muhu sits at 58.6°N, 23.2°E, 0 m above sea level, in Estonia. The nearest listed city is Haapsalu, 41 km away.

Topography around Muhu

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

Within 3 km, the terrain around Muhu has only modest variations in elevation — a maximum elevation change of 29 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 37 m; within 80 km, only modest variations in elevation — a maximum elevation change of 72 m.

The land around Muhu is covered by trees (55%) and grassland (41%) within 3 km, water (59%) within 16 km, and water (54%) and trees (29%) within 80 km.

3 km

29 m

trees 55%

16 km

37 m

water 59%

80 km

72 m

water 54%

treesgrasslandcroplandwaterwetland

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

September weather nearby: Haapsalu 41 km · Kuressaare 59 km · Pärnu 77 km · Ruhnu 89 km · Nõmme 119 km · Mustamäe 121 km · Haabersti 121 km · Kristiine 123 km

Estonia travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 66% of US; price level, 2025
GDP per capita: $34,418; 2025
Happiness: 6.4 / 10; World Happiness, 2025
Safe drinking water: 99%; of population, 2024
Homicide rate: 1.5; per 100k, 2023
Road deaths: 4.5; per 100k/yr, 2019
Income group: High; World Bank
English: High; EF EPI 561
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 Muhu (58.6019°, 23.2469°, elevation 0 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	18	14
2	18	14
3	18	14
4	18	13
5	17	13
6	17	13
7	17	13
8	17	13
9	17	13
10	17	13
11	16	12
12	16	12
13	16	12
14	16	12
15	16	12
16	15	12
17	15	11
18	15	11
19	15	11
20	15	11
21	15	11
22	14	11
23	14	11
24	14	10
25	14	10
26	14	10
27	14	10
28	13	10
29	13	10
30	13	10

	Clearer (%)	Cloudier (%)
1	43	57
2	43	57
3	42	58
4	43	57
5	43	57
6	43	57
7	43	57
8	44	56
9	44	56
10	44	56
11	44	56
12	44	56
13	44	56
14	44	56
15	43	57
16	43	57
17	42	58
18	42	58
19	42	58
20	40	60
21	40	60
22	39	61
23	38	62
24	38	62
25	36	64
26	36	64
27	36	64
28	36	64
29	35	65
30	34	66

	Rain chance (%)
1	37
2	37
3	36
4	36
5	36
6	35
7	35
8	35
9	34
10	34
11	34
12	34
13	33
14	33
15	33
16	33
17	33
18	33
19	33
20	33
21	33
22	33
23	33
24	33
25	33
26	33
27	34
28	34
29	35
30	36

	Dry (%)	Comfortable (%)	Humid (%)
1	59	36	5
2	60	36	4
3	61	35	4
4	63	34	3
5	64	33	3
6	66	32	2
7	67	31	2
8	69	30	1
9	71	28	1
10	73	26	1
11	74	25	1
12	76	23	1
13	79	21	0
14	81	19	0
15	82	18	0
16	84	16	0
17	86	14	0
18	87	13	0
19	88	12	0
20	89	11	0
21	90	10	0
22	91	9	0
23	91	9	0
24	92	8	0
25	92	8	0
26	93	7	0
27	93	7	0
28	94	6	0
29	94	6	0
30	95	5	0

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

	Clearer (%)	Cloudier (%)
1	43	57
2	43	57
3	42	58
4	43	57
5	43	57
6	43	57
7	43	57
8	44	56
9	44	56
10	44	56
11	44	56
12	44	56
13	44	56
14	44	56
15	43	57
16	43	57
17	42	58
18	42	58
19	42	58
20	40	60
21	40	60
22	39	61
23	38	62
24	38	62
25	36	64
26	36	64
27	36	64
28	36	64
29	35	65
30	34	66

	Rain chance (%)
1	37
2	37
3	36
4	36
5	36
6	35
7	35
8	35
9	34
10	34
11	34
12	34
13	33
14	33
15	33
16	33
17	33
18	33
19	33
20	33
21	33
22	33
23	33
24	33
25	33
26	33
27	34
28	34
29	35
30	36

	Dry (%)	Comfortable (%)	Humid (%)
1	59	36	5
2	60	36	4
3	61	35	4
4	63	34	3
5	64	33	3
6	66	32	2
7	67	31	2
8	69	30	1
9	71	28	1
10	73	26	1
11	74	25	1
12	76	23	1
13	79	21	0
14	81	19	0
15	82	18	0
16	84	16	0
17	86	14	0
18	87	13	0
19	88	12	0
20	89	11	0
21	90	10	0
22	91	9	0
23	91	9	0
24	92	8	0
25	92	8	0
26	93	7	0
27	93	7	0
28	94	6	0
29	94	6	0
30	95	5	0

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

	Clearer (%)	Cloudier (%)
1	43	57
2	43	57
3	42	58
4	43	57
5	43	57
6	43	57
7	43	57
8	44	56
9	44	56
10	44	56
11	44	56
12	44	56
13	44	56
14	44	56
15	43	57
16	43	57
17	42	58
18	42	58
19	42	58
20	40	60
21	40	60
22	39	61
23	38	62
24	38	62
25	36	64
26	36	64
27	36	64
28	36	64
29	35	65
30	34	66

	Rain chance (%)
1	37
2	37
3	36
4	36
5	36
6	35
7	35
8	35
9	34
10	34
11	34
12	34
13	33
14	33
15	33
16	33
17	33
18	33
19	33
20	33
21	33
22	33
23	33
24	33
25	33
26	33
27	34
28	34
29	35
30	36

	Dry (%)	Comfortable (%)	Humid (%)
1	59	36	5
2	60	36	4
3	61	35	4
4	63	34	3
5	64	33	3
6	66	32	2
7	67	31	2
8	69	30	1
9	71	28	1
10	73	26	1
11	74	25	1
12	76	23	1
13	79	21	0
14	81	19	0
15	82	18	0
16	84	16	0
17	86	14	0
18	87	13	0
19	88	12	0
20	89	11	0
21	90	10	0
22	91	9	0
23	91	9	0
24	92	8	0
25	92	8	0
26	93	7	0
27	93	7	0
28	94	6	0
29	94	6	0
30	95	5	0