Siedlce weather in August

In August, Siedlce sees average daytime highs of 23°C and overnight lows near 13°C, with 64 mm of rain across 10.4 wet days and about 14.5 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 28% of the time in August, and the air most often feels dry.

Daylight stretches from about 15 h 18 min at the start of August to 13 h 30 min by month's end. Set against the rest of the year, August is Siedlce's 1st-clearest and 12th-windiest month. For the whole year in context, see Siedlce's year-round climate.

Daytime high
23°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
64 mm
10.4 wet days
Daylight
14 h 30 min
4:21 AM – 6:49 PM
Cloud cover
58%
1st clearest
Wind
11 km/h
12th windiest
Solar energy
4.5 kWh/m²
Travel score
6.8
out of 10

Siedlce is city in eastern Poland.

Air quality
Elevated
PM2.5 19.6 µg/m³ · 2019
Density
2,412/km²
people per km²
Founded
1448

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 21°C by the end.

A typical August day in Siedlce reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 29°C. Set against its neighbours, August runs on par with July and about 5°C warmer than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12514
22514
32514
42514
52514
62514
72514
82414
92414
102414
112414
122414
132413
142413
152413
162413
172413
182313
192313
202313
212313
222312
232312
242212
252212
262212
272212
282212
292112
302111
312111

How August really feels in Siedlce

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
0
heat index over the day's high
Days feeling ≤ C
0
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.

Siedlce weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°419.96.580.0
Feb / -4°379.66.59.50.0
Mar / -1°4210.6411.50.6
Apr13° / 469.7113.63.7
May19° / 7012.30.115.45.7
Jun22° / 12°7311.9016.46.1
Jul24° / 14°83130166.5
Aug23° / 13°6410.4014.56.8
Sep18° / 579.4012.45.7
Oct12° / 469.40.310.33.1
Nov / 399.52.88.50.5
Dec / -3°419.95.67.60.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35149
45149
55248
65149
75149
85149
95149
105248
115248
125347
135347
145347
155446
165347
175347
185347
195347
205248
215248
225149
235050
244951
254852
264753
274654
284555
294456
304357
314357

Chance of precipitation in August

Any precipitation

Siedlce gets around 64 mm of rain over 10.4 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 34% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
236
336
436
535
635
735
835
934
1034
1134
1234
1334
1434
1533
1633
1733
1833
1933
2033
2133
2233
2333
2433
2533
2634
2734
2834
2934
3034
3134

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 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13236284
23236274
33336274
43435274
53635264
63734254
73834243
84034233
94134223
104234213
114434203
124534183
134734172
144833162
154933152
165133142
175232142
185332132
195531122
205531122
215731111
225830111
235930101
246029101
25612991
26622891
27652780
28652780
29672670
30682660
31692560

Wind in August

Winds average 11 km/h in August, the calmest month.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 18 min at the start of August to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over August. Sunrise moves from 3:57 AM to 4:46 AM, and sunset from 7:17 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.33:577:17
215.33:587:16
315.24:007:14
415.24:017:12
515.14:037:10
615.14:047:09
715.04:067:07
815.04:087:05
914.94:097:03
1014.84:117:01
1114.84:136:59
1214.74:146:57
1314.74:166:55
1414.64:186:53
1514.54:196:51
1614.54:216:49
1714.44:236:47
1814.34:246:45
1914.34:266:43
2014.24:286:41
2114.24:296:38
2214.14:316:36
2314.04:336:34
2414.04:346:32
2513.94:366:29
2613.84:386:27
2713.84:396:25
2813.74:416:23
2913.64:436:20
3013.64:446:18
3113.54:466:16

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.5 kWh/m².

For context, solar energy here swings from a low near 0.52 kWh/m² to a high of 5.51 kWh/m² in June across the year — August's 4.5 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.6Bright
154.6Bright
164.5Bright
174.5Bright
184.5Bright
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.0Bright
283.9Moderate
293.9Moderate
303.8Moderate
313.8Moderate
Planning a trip in August

Is August a good time to visit Siedlce?

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

6.8
Sightseeing
1st-best month of the year
5.3
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Siedlce for sightseeing.

What to pack for Siedlce in August

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

In August, Siedlce sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Siedlce in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siedlce peaks around June 22 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 22UV 6Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low

Air quality in Siedlce in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Siedlce is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Siedlce's WHO annual average of 19.6 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Dec 1613 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb18Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun24Moderate
Jul24Moderate
Aug21Moderate
Sep19Moderate
Oct16Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Siedlce?

Siedlce sits at 52.2°N, 22.3°E, 155 m above sea level, in Poland. The nearest listed city is Sokołów Podlaski, 27 km away.

Międzyrzec PodlaskiRadzyń PodlaskiSiemiatyczeMińsk MazowieckiGarwolinBiała Podlaska

Topography around Siedlce

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

Within 3 km, the terrain around Siedlce has only modest variations in elevation — a maximum elevation change of 45 m around an average of 154 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 70 m; within 80 km, only modest variations in elevation — a maximum elevation change of 155 m.

The land around Siedlce is covered by artificial surfaces (36%), grassland (28%) and trees (24%) within 3 km, cropland (38%), trees (29%) and grassland (28%) within 16 km, and trees (38%), cropland (38%) and grassland (22%) within 80 km.

3 km
45 m
16 km
70 m
80 km
155 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Sokołów Podlaski 27 km · Łuków 27 km · Międzyrzec Podlaski 39 km · Radzyń Podlaski 48 km · Siemiatycze 48 km · Mińsk Mazowiecki 49 km · Garwolin 55 km · Biała Podlaska 58 km

Poland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 52% of US
price level, 2025
GDP per capita
$28,420
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
9.4
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 600
Religion
Roman Catholic 71%refused to answer 21%no religion 7%

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 Siedlce (52.1677°, 22.2901°, elevation 155 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).