Olsztyn weather in July

In July, Olsztyn sees average daytime highs of 23°C and overnight lows near 13°C, with 86 mm of rain across 13.3 wet days and about 16.3 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 23% of the time in July, and the air most often feels dry.

Daylight stretches from about 16 h 48 min at the start of July to 15 h 36 min by month's end. Set against the rest of the year, July is Olsztyn's 2nd-clearest and 11th-windiest month. For the whole year in context, see Olsztyn's year-round climate.

Daytime high
23°
1st warmest
Overnight low
13°
12th coldest
Rainfall
86 mm
13.3 wet days
Daylight
16 h 24 min
3:33 AM – 7:54 PM
Cloud cover
61%
2nd clearest
Wind
12 km/h
11th windiest
Solar energy
5.14 kWh/m²
Travel score
6.3
out of 10

Olsztyn is city in Warmian-Masurian Voivodeship, Poland.

Air quality
Moderate
PM2.5 15 µg/m³ · 2019
Density
1,929/km²
people per km²
Founded
1353

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 22°C in the first days to 24°C by the end.

A typical July day in Olsztyn reaches about 23°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12212
22212
32213
42213
52213
62213
72213
82213
92213
102213
112213
122213
132213
142313
152313
162313
172314
182314
192314
202314
212314
222314
232314
242314
252314
262314
272314
282414
292414
302414
312414

How July really feels in Olsztyn

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.

Olsztyn 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-0° / -4°4310.86.67.80.0
Feb / -4°378.85.59.40.0
Mar / -1°4310.34.111.50.4
Apr12° / 419.71.313.73.3
May18° / 6412.20.115.65.4
Jun21° / 11°7112.3016.75.9
Jul23° / 13°8613.3016.36.3
Aug22° / 13°6611.5014.66.5
Sep17° / 599.8012.55.4
Oct11° / 5010.10.410.22.8
Nov / 429.92.48.30.4
Dec / -2°4510.45.47.30.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 22% of July, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34456
44456
54456
64555
74456
84456
94555
104357
114456
124456
134555
144456
154456
164555
174555
184456
194555
204555
214654
224654
234753
244753
254753
264753
274753
284753
294753
304753
314753

Chance of precipitation in July

Any precipitation

Olsztyn gets around 86 mm of rain over 13.3 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 42% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
145
245
345
445
545
646
746
846
946
1046
1145
1245
1345
1444
1544
1643
1742
1841
1941
2040
2140
2240
2339
2439
2539
2639
2739
2839
2939
3039
3139

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 (%)
16127102
25928112
35728123
45629123
55430133
65331133
75231143
85132143
95132143
104933153
114833154
124833154
134733164
144733164
154634164
164634164
174534164
184435164
194435175
204336175
214236175
224136185
234136185
244036186
253936196
263837196
273737206
283737206
293637216
303538216
313538216

Wind in July

Winds average 12 km/h in July.

Across July, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 h 48 min at the start of July to 15 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over July. Sunrise moves from 3:18 AM to 3:56 AM, and sunset from 8:05 PM to 7:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.83:188:05
216.83:198:04
316.73:208:04
416.73:208:03
516.73:218:03
616.73:228:02
716.63:238:02
816.63:248:01
916.63:258:01
1016.63:268:00
1116.53:277:59
1216.53:287:58
1316.53:297:57
1416.43:317:56
1516.43:327:55
1616.43:337:54
1716.33:347:53
1816.33:367:52
1916.23:377:51
2016.23:397:49
2116.13:407:48
2216.13:417:47
2316.03:437:45
2416.03:447:44
2515.93:467:42
2615.93:477:41
2715.83:497:39
2815.83:517:38
2915.73:527:36
3015.73:547:34
3115.63:567:33

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.14 kWh/m².

For context, solar energy here swings from a low near 0.44 kWh/m² to a high of 5.34 kWh/m² in June across the year — July's 5.14 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.8Bright
Planning a trip in July

Is July a good time to visit Olsztyn?

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

6.3
Sightseeing
2nd-best month of the year
4.7
Beach & pool
1st-best month of the year

July is a reasonable time to visit Olsztyn for sightseeing.

What to pack for Olsztyn in July

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

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

light clothesrain gearsun protection

UV index in Olsztyn 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 Olsztyn peaks around June 23 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 23UV 6Dec 19UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low

Air quality in Olsztyn in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Olsztyn is worst in March — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Olsztyn's WHO annual average of 15 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 2221 µg/m³Dec 159 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb14Moderate
Mar21Moderate
Apr20Moderate
May17Moderate
Jun18Moderate
Jul17Moderate
Aug16Moderate
Sep14Moderate
Oct12Good
Nov11Good
Dec9Good
Location & terrain

Where is Olsztyn?

Olsztyn sits at 53.8°N, 20.5°E, 151 m above sea level, in Poland. The nearest listed city is Ostróda, 36 km away.

Lidzbark WarmińskiSzczytnoMrągowoBartoszyceDziałdowoIławaKętrzyn

Topography around Olsztyn

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

Within 3 km, the terrain around Olsztyn has only modest variations in elevation — a maximum elevation change of 73 m around an average of 130 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 125 m; within 80 km, significant variations in elevation — a maximum elevation change of 324 m.

The land around Olsztyn is covered by trees (54%) and artificial surfaces (38%) within 3 km, trees (51%) and grassland (26%) within 16 km, and trees (42%), cropland (31%) and grassland (24%) within 80 km.

3 km
73 m
16 km
125 m
80 km
324 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Ostróda 36 km · Lidzbark Warmiński 38 km · Szczytno 41 km · Mrągowo 54 km · Bartoszyce 56 km · Działdowo 64 km · Iława 64 km · Kętrzyn 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 Olsztyn (53.7838°, 20.4927°, elevation 151 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).