Kuressaare weather in September

In September, Kuressaare sees average daytime highs of 16°C and overnight lows near 11°C, with 49 mm of rain across 9.4 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 14°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 Kuressaare's 6th-clearest and 7th-windiest month. For the whole year in context, see Kuressaare's year-round climate.

Daytime high
16°
4th warmest
Overnight low
11°
9th coldest
Rainfall
49 mm
9.4 wet days
Daylight
12 h 30 min
6:09 AM – 6:39 PM
Cloud cover
63%
6th clearest
Wind
19 km/h
7th windiest
Solar energy
2.8 kWh/m²
Travel score
4.9
out of 10

Kuressaare is town on Saaremaa island in Estonia.

Density
818/km²
people per km²
Founded
1154

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 14°C by the end.

A typical September day in Kuressaare reaches about 16°C in the afternoon and slips back to 11°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 19°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11813
21813
31813
41812
51812
61712
71712
81712
91712
101712
111711
121611
131611
141611
151611
161611
171611
181510
191510
201510
211510
221510
231510
241410
25149
26149
27149
28149
29139
30139

How September really feels in Kuressaare

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.

Kuressaare 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 / -3°4010.16.46.90.0
Feb-1° / -4°3596.48.90.0
Mar / -3°317.74.711.40.0
Apr / 348.61.5141.4
May14° / 367.40.116.44.2
Jun18° / 11°5510017.85.8
Jul21° / 15°619.8017.26.6
Aug20° / 14°6511.1015.16.2
Sep16° / 11°499.4012.54.9
Oct10° / 5611.10.19.92.2
Nov / 5211.42.57.50.4
Dec / -1°4611.45.56.20.0

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 19% of September, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14258
24159
34159
44258
54357
64357
74357
84456
94456
104456
114456
124555
134555
144456
154456
164456
174555
184357
194357
204258
214258
224159
234159
243961
253961
263961
273862
283862
293763
303763

Chance of precipitation in September

Any precipitation

Kuressaare gets around 49 mm of rain over 9.4 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 32% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
135
235
334
434
534
633
733
833
933
1032
1132
1232
1332
1432
1531
1631
1731
1831
1930
2030
2130
2230
2330
2430
2531
2631
2732
2832
2933
3034

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 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
155387
257376
359365
461354
562344
664333
766322
868302
969292
1072271
1174251
1276231
1377221
1479201
1581181
1683170
1785150
1886140
1988120
2089110
2190100
2290100
239190
249190
259280
269280
279370
289460
299460
309550

Wind in September

Winds average 19 km/h in September.

Across September, daily wind ranges from about 18 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2020light breeze
2120light breeze
2220light breeze
2320light breeze
2420light breeze
2520light breeze
2620light breeze
2720light breeze
2820light breeze
2920light breeze
3020light breeze

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 5:36 AM to 6:41 AM, and sunset from 7:24 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:367:24
213.75:387:21
313.65:407:18
413.55:437:15
513.55:457:12
613.45:477:09
713.35:497:06
813.25:527:03
913.15:547:00
1013.05:566:57
1112.95:586:54
1212.86:006:51
1312.86:036:48
1412.76:056:45
1512.66:076:42
1612.56:096:39
1712.46:126:36
1812.36:146:33
1912.26:166:30
2012.26:186:27
2112.16:216:24
2212.06:236:21
2311.96:256:19
2411.86:276:16
2511.76:306:13
2611.66:326:10
2711.56:346:07
2811.56:366:04
2911.46:396:01
3011.36:415:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.8 kWh/m².

For context, solar energy here swings from a low near 0.25 kWh/m² to a high of 6.18 kWh/m² in June across the year — September's 2.8 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.6Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.3Moderate
63.3Moderate
73.2Moderate
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 Kuressaare?

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

4.9
Sightseeing
4th-best month of the year
0.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Kuressaare for sightseeing.

What to pack for Kuressaare in September

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

In September, Kuressaare sees daytime highs around 16°C and nights near 11°C. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Kuressaare 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 16 km away) 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.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr3Bracing
May8Bracing
Jun13Bracing
Jul17Cool
Aug18Cool
Sep15Cool
Oct11Bracing
Nov8Bracing
Dec5Bracing

UV index in Kuressaare 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 Kuressaare peaks around June 19 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 19UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Kuressaare?

Kuressaare sits at 58.3°N, 22.5°E, 0 m above sea level, in Estonia. The nearest listed city is Muhu, 59 km away.

MuhuRuhnuHaapsaluVentspilsPärnu

Topography around Kuressaare

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

Within 3 km, the terrain around Kuressaare has only modest variations in elevation — a maximum elevation change of 24 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 52 m; within 80 km, only modest variations in elevation — a maximum elevation change of 113 m.

The land around Kuressaare is covered by trees (34%) and grassland (28%) within 3 km, water (37%) and trees (35%) within 16 km, and water (73%) within 80 km.

3 km
24 m
16 km
52 m
80 km
113 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Muhu 59 km · Ruhnu 67 km · Haapsalu 97 km · Ventspils 110 km · Pärnu 118 km · Kuldīga 146 km · Tukums 148 km · Jūrmala 162 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
none 58%Orthodox 17%Protestant 9%other 3%

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 Kuressaare (58.2538°, 22.4922°, 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).