Ostrołęka weather in July

In July, Ostrołęka sees average daytime highs of 24°C and overnight lows near 14°C, with 79 mm of rain across 12.2 wet days and about 16.2 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 25% of the time in July, and the air most often feels dry.

Daylight stretches from about 16 h 36 min at the start of July to 15 h 30 min by month's end. Set against the rest of the year, July is Ostrołęka's 2nd-clearest and 11th-windiest month. For the whole year in context, see Ostrołęka's year-round climate.

Daytime high
24°
1st warmest
Overnight low
14°
12th coldest
Rainfall
79 mm
12.2 wet days
Daylight
16 h 12 min
3:32 AM – 7:46 PM
Cloud cover
61%
2nd clearest
Wind
11 km/h
11th windiest
Solar energy
5.25 kWh/m²
Travel score
6.6
out of 10

Ostrołęka is city with powiat rights of Poland.

Density
1,919/km²
people per km²
Founded
1050

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 25°C by the end.

A typical July day in Ostrołęka reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 29°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12313
22313
32313
42313
52313
62313
72313
82313
92313
102313
112313
122414
132414
142414
152414
162414
172414
182414
192414
202414
212414
222414
232414
242414
252514
262514
272514
282514
292514
302514
312514

How July really feels in Ostrołęka

Once humidity and wind are folded in, July 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

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

Ostrołęka weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°3910.36.37.90.0
Feb / -4°369.15.59.50.0
Mar / -1°39103.211.50.6
Apr13° / 4410.10.913.63.6
May19° / 6611.9015.55.7
Jun22° / 11°7011.8016.66.2
Jul24° / 14°7912.2016.26.6
Aug23° / 13°6210.6014.56.7
Sep18° / 579.7012.45.7
Oct12° / 479.60.310.33.1
Nov / 399.62.58.40.4
Dec / -3°429.74.77.40.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 20% of July, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24357
34456
44456
54456
64456
74357
84357
94456
104456
114456
124456
134555
144456
154456
164456
174456
184456
194456
204555
214555
224555
234654
244753
254852
264852
274852
284951
294951
305050
315050

Chance of precipitation in July

Any precipitation

Ostrołęka gets around 79 mm of rain over 12.2 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
239
339
439
539
639
739
839
939
1039
1139
1239
1339
1439
1539
1639
1739
1839
1939
2039
2140
2240
2339
2439
2539
2639
2739
2838
2938
3038
3138

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 46% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16026113
25927113
35827123
45728123
55628133
65529133
75329144
85329144
95130154
105130154
115030164
124930164
134830174
144831175
154731175
164632185
174532185
184333185
194234195
204134196
214034196
224035206
233935206
243835216
253835216
263735226
273735236
283735236
293634246
303634246
313634245

Wind in July

Winds average 11 km/h in July.

Across July, 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
112light breeze
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 h 36 min at the start of July to 15 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over July. Sunrise moves from 3:18 AM to 3:54 AM, and sunset from 7:56 PM to 7:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.63:187:56
216.63:197:56
316.63:197:55
416.63:207:55
516.63:217:55
616.53:227:54
716.53:237:54
816.53:247:53
916.53:257:52
1016.43:267:52
1116.43:277:51
1216.43:287:50
1316.33:297:49
1416.33:307:48
1516.33:317:47
1616.23:327:46
1716.23:347:45
1816.13:357:44
1916.13:367:43
2016.13:387:42
2116.03:397:40
2216.03:407:39
2315.93:427:38
2415.93:437:36
2515.83:457:35
2615.83:467:33
2715.73:487:32
2815.73:497:30
2915.63:517:29
3015.63:537:27
3115.53:547:25

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.25 kWh/m².

For context, solar energy here swings from a low near 0.48 kWh/m² to a high of 5.46 kWh/m² in June across the year — July's 5.25 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in July

Is July a good time to visit Ostrołęka?

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

6.6
Sightseeing
2nd-best month of the year
5.4
Beach & pool
1st-best month of the year

July is a reasonable time to visit Ostrołęka for sightseeing.

What to pack for Ostrołęka in July

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

In July, Ostrołęka sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Ostrołęka in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Ostrołęka peaks around June 20 at about 6 (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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 20UV 6Dec 19UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Ostrołęka?

Ostrołęka sits at 53.1°N, 21.6°E, 97 m above sea level, in Poland. The nearest listed city is Łomża, 34 km away.

Ostrów MazowieckaZambrówPrzasnyszPułtuskWyszkówPiszSzczytno

Topography around Ostrołęka

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

Within 3 km, the terrain around Ostrołęka has only modest variations in elevation — a maximum elevation change of 32 m around an average of 100 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 58 m; within 80 km, only modest variations in elevation — a maximum elevation change of 168 m.

The land around Ostrołęka is covered by trees (39%), grassland (30%) and artificial surfaces (26%) within 3 km, trees (42%) and grassland (36%) within 16 km, and trees (39%), cropland (30%) and grassland (28%) within 80 km.

3 km
32 m
16 km
58 m
80 km
168 m
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Łomża 34 km · Ostrów Mazowiecka 38 km · Zambrów 46 km · Przasnysz 47 km · Pułtusk 54 km · Wyszków 55 km · Pisz 62 km · Szczytno 66 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 Ostrołęka (53.0862°, 21.5757°, elevation 97 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).