Olsztyn weather in April

In April, Olsztyn sees average daytime highs of 12°C and overnight lows near 3°C, with 41 mm of precipitation across 9.7 wet days and about 13.7 hours of daylight. It is the 6th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 9°C in the first days to 15°C by the end. The sky is clear or mostly clear about 25% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 36 min at the start of April to 14 h 42 min by month's end. Set against the rest of the year, April is Olsztyn's 3rd-clearest and 8th-windiest month. For the whole year in context, see Olsztyn's year-round climate.

Daytime high: 12°; 6th warmest
Overnight low: 3°; 6th coldest
Precipitation: 41 mm; 9.7 wet days
Daylight: 13 h 42 min; 4:46 AM – 6:30 PM
Cloud cover: 62%; 3rd clearest
Wind: 13 km/h; 8th windiest
Solar energy: 4.15 kWh/m²
Travel score: 3.3; 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.

← March Olsztyn year-round climate May →Best places to visit in April

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 9°C in the first days to 15°C by the end.

A typical April day in Olsztyn reaches about 12°C in the afternoon and slips back to 3°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 19°C. Set against its neighbours, April runs about 7°C warmer than March and about 5°C cooler than May.

	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)	9	9	9	9	10	10	10	10	10	11	11	11	11	12	12	12	12	13	13	13	14	14	14	15	15	15	15	16	16	16
Avg low (°C)	1	1	1	1	1	2	2	2	2	2	2	2	2	3	3	3	3	3	3	4	4	4	4	4	5	5	5	5	5	6

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

How April really feels in Olsztyn

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 18 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

The story in April is cold — wind chill drags the overnight "feels like" below the raw low.

Olsztyn weather by month

How April compares with the rest of the year at a glance. April is the 6th-warmest and 11th-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° / -4°	43	10.8	6.6	7.8	0.0
Feb	1° / -4°	37	8.8	5.5	9.4	0.0
Mar	6° / -1°	43	10.3	4.1	11.5	0.4
Apr	12° / 3°	41	9.7	1.3	13.7	3.3
May	18° / 8°	64	12.2	0.1	15.6	5.4
Jun	21° / 11°	71	12.3	0	16.7	5.9
Jul	23° / 13°	86	13.3	0	16.3	6.3
Aug	22° / 13°	66	11.5	0	14.6	6.5
Sep	17° / 9°	59	9.8	0	12.5	5.4
Oct	11° / 5°	50	10.1	0.4	10.2	2.8
Nov	5° / 1°	42	9.9	2.4	8.3	0.4
Dec	1° / -2°	45	10.4	5.4	7.3	0.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 60%. Skies tend to open up as the month goes on.

	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 (%)	35	34	34	35	34	34	35	35	35	36	36	38	38	39	40	40	41	42	43	44	44	46	46	47	48	48	48	48	46	46
Cloudier (%)	65	66	66	65	66	66	65	65	65	64	64	62	62	61	60	60	59	58	57	56	56	54	54	53	52	52	52	52	54	54

	Clearer (%)	Cloudier (%)
1	35	65
2	34	66
3	34	66
4	35	65
5	34	66
6	34	66
7	35	65
8	35	65
9	35	65
10	36	64
11	36	64
12	38	62
13	38	62
14	39	61
15	40	60
16	40	60
17	41	59
18	42	58
19	43	57
20	44	56
21	44	56
22	46	54
23	46	54
24	47	53
25	48	52
26	48	52
27	48	52
28	48	52
29	46	54
30	46	54

Chance of precipitation in April

Any precipitationSnow

Olsztyn gets around 41 mm of rain and snow over 9.7 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 36% on the wettest days, and about 1 day brings snow.

	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 (%)	32	33	33	33	34	34	35	35	35	35	36	35	35	35	34	34	33	32	32	31	30	30	30	29	29	29	29	29	29	30
Snow chance (%)	10	9	9	9	9	9	8	8	7	7	7	6	6	5	5	4	4	3	3	2	2	2	1	1	1	1	1	1	1	1

	Rain chance (%)	Snow chance (%)
1	32	10
2	33	9
3	33	9
4	33	9
5	34	9
6	34	9
7	35	8
8	35	8
9	35	7
10	35	7
11	36	7
12	35	6
13	35	6
14	35	5
15	34	5
16	34	4
17	33	4
18	32	3
19	32	3
20	31	2
21	30	2
22	30	2
23	30	1
24	29	1
25	29	1
26	29	1
27	29	1
28	29	1
29	29	1
30	30	1

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 100% 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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in April

Winds average 13 km/h in April.

Across April, daily wind ranges from about 13 km/h on the calmest days to 14 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)	14	14	14	14	14	14	14	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 36 min at the start of April to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 126 minutes over April. Sunrise moves from 5:23 AM to 4:15 AM, and sunset from 6:02 PM to 6:56 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)	12.6	12.7	12.8	12.9	12.9	13.0	13.1	13.2	13.2	13.3	13.4	13.4	13.5	13.6	13.7	13.7	13.8	13.9	13.9	14.0	14.1	14.1	14.2	14.3	14.4	14.4	14.5	14.6	14.6	14.7
Sunrise (AM)	5:23	5:21	5:18	5:16	5:13	5:11	5:08	5:06	5:03	5:01	4:59	4:56	4:54	4:51	4:49	4:46	4:44	4:42	4:39	4:37	4:35	4:32	4:30	4:28	4:26	4:23	4:21	4:19	4:17	4:15
Sunset (PM)	6:02	6:04	6:06	6:08	6:09	6:11	6:13	6:15	6:17	6:19	6:21	6:23	6:24	6:26	6:28	6:30	6:32	6:34	6:36	6:38	6:39	6:41	6:43	6:45	6:47	6:49	6:51	6:52	6:54	6:56

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.6	5:23	6:02
2	12.7	5:21	6:04
3	12.8	5:18	6:06
4	12.9	5:16	6:08
5	12.9	5:13	6:09
6	13.0	5:11	6:11
7	13.1	5:08	6:13
8	13.2	5:06	6:15
9	13.2	5:03	6:17
10	13.3	5:01	6:19
11	13.4	4:59	6:21
12	13.4	4:56	6:23
13	13.5	4:54	6:24
14	13.6	4:51	6:26
15	13.7	4:49	6:28
16	13.7	4:46	6:30
17	13.8	4:44	6:32
18	13.9	4:42	6:34
19	13.9	4:39	6:36
20	14.0	4:37	6:38
21	14.1	4:35	6:39
22	14.1	4:32	6:41
23	14.2	4:30	6:43
24	14.3	4:28	6:45
25	14.4	4:26	6:47
26	14.4	4:23	6:49
27	14.5	4:21	6:51
28	14.6	4:19	6:52
29	14.6	4:17	6:54
30	14.7	4:15	6:56

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.15 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 — April's 4.15 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	3.5	3.5	3.5	3.6	3.6	3.7	3.7	3.8	3.8	3.9	4.0	4.0	4.1	4.2	4.3	4.3	4.4	4.5	4.5	4.6	4.6	4.7	4.7	4.8	4.8	4.8	4.9	4.9
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.4	Moderate
2	3.4	Moderate
3	3.5	Moderate
4	3.5	Moderate
5	3.5	Moderate
6	3.6	Moderate
7	3.6	Moderate
8	3.7	Moderate
9	3.7	Moderate
10	3.8	Moderate
11	3.8	Moderate
12	3.9	Moderate
13	4.0	Moderate
14	4.0	Bright
15	4.1	Bright
16	4.2	Bright
17	4.3	Bright
18	4.3	Bright
19	4.4	Bright
20	4.5	Bright
21	4.5	Bright
22	4.6	Bright
23	4.6	Bright
24	4.7	Bright
25	4.7	Bright
26	4.8	Bright
27	4.8	Bright
28	4.8	Bright
29	4.9	Bright
30	4.9	Bright

Planning a trip in April

Is April a good time to visit Olsztyn?

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

3.3

Sightseeing

6th-best month of the year

0.1

Beach & pool

6th-best month of the year

April is a weaker month for outdoor sightseeing in Olsztyn.

What to pack for Olsztyn in April

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

In April, Olsztyn sees daytime highs around 12°C and nights near 3°C. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

UV index in Olsztyn in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 4 — 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.

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

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

Air quality in Olsztyn in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	12	14	21	20	17	18	17	16	14	12	11	9
Level	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	12	Good
Feb	14	Moderate
Mar	21	Moderate
Apr	20	Moderate
May	17	Moderate
Jun	18	Moderate
Jul	17	Moderate
Aug	16	Moderate
Sep	14	Moderate
Oct	12	Good
Nov	11	Good
Dec	9	Good

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.

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

trees 54%

16 km

125 m

trees 51%

80 km

324 m

trees 42%

treesgrasslandcroplandartificial surfaceswater

← March Olsztyn year-round climate May →Best places to visit in April

April 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

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).

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

	Clearer (%)	Cloudier (%)
1	35	65
2	34	66
3	34	66
4	35	65
5	34	66
6	34	66
7	35	65
8	35	65
9	35	65
10	36	64
11	36	64
12	38	62
13	38	62
14	39	61
15	40	60
16	40	60
17	41	59
18	42	58
19	43	57
20	44	56
21	44	56
22	46	54
23	46	54
24	47	53
25	48	52
26	48	52
27	48	52
28	48	52
29	46	54
30	46	54

	Rain chance (%)	Snow chance (%)
1	32	10
2	33	9
3	33	9
4	33	9
5	34	9
6	34	9
7	35	8
8	35	8
9	35	7
10	35	7
11	36	7
12	35	6
13	35	6
14	35	5
15	34	5
16	34	4
17	33	4
18	32	3
19	32	3
20	31	2
21	30	2
22	30	2
23	30	1
24	29	1
25	29	1
26	29	1
27	29	1
28	29	1
29	29	1
30	30	1

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

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

	Clearer (%)	Cloudier (%)
1	35	65
2	34	66
3	34	66
4	35	65
5	34	66
6	34	66
7	35	65
8	35	65
9	35	65
10	36	64
11	36	64
12	38	62
13	38	62
14	39	61
15	40	60
16	40	60
17	41	59
18	42	58
19	43	57
20	44	56
21	44	56
22	46	54
23	46	54
24	47	53
25	48	52
26	48	52
27	48	52
28	48	52
29	46	54
30	46	54

	Rain chance (%)	Snow chance (%)
1	32	10
2	33	9
3	33	9
4	33	9
5	34	9
6	34	9
7	35	8
8	35	8
9	35	7
10	35	7
11	36	7
12	35	6
13	35	6
14	35	5
15	34	5
16	34	4
17	33	4
18	32	3
19	32	3
20	31	2
21	30	2
22	30	2
23	30	1
24	29	1
25	29	1
26	29	1
27	29	1
28	29	1
29	29	1
30	30	1

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

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

	Clearer (%)	Cloudier (%)
1	35	65
2	34	66
3	34	66
4	35	65
5	34	66
6	34	66
7	35	65
8	35	65
9	35	65
10	36	64
11	36	64
12	38	62
13	38	62
14	39	61
15	40	60
16	40	60
17	41	59
18	42	58
19	43	57
20	44	56
21	44	56
22	46	54
23	46	54
24	47	53
25	48	52
26	48	52
27	48	52
28	48	52
29	46	54
30	46	54

	Rain chance (%)	Snow chance (%)
1	32	10
2	33	9
3	33	9
4	33	9
5	34	9
6	34	9
7	35	8
8	35	8
9	35	7
10	35	7
11	36	7
12	35	6
13	35	6
14	35	5
15	34	5
16	34	4
17	33	4
18	32	3
19	32	3
20	31	2
21	30	2
22	30	2
23	30	1
24	29	1
25	29	1
26	29	1
27	29	1
28	29	1
29	29	1
30	30	1

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100