Bytów weather in May

In May, Bytów sees average daytime highs of 17°C and overnight lows near 7°C, with 67 mm of precipitation across 11.6 wet days and about 15.7 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 18°C by the end. The sky is clear or mostly clear about 29% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 48 min at the start of May to 16 h 30 min by month's end. Set against the rest of the year, May is Bytów's 1st-clearest and 10th-windiest month. For the whole year in context, see Bytów's year-round climate.

Daytime high
17°
5th warmest
Overnight low
8th coldest
Precipitation
67 mm
11.6 wet days
Daylight
15 h 42 min
3:54 AM – 7:38 PM
Cloud cover
60%
1st clearest
Wind
13 km/h
10th windiest
Solar energy
5.23 kWh/m²
Travel score
5.1
out of 10

Bytów is city of Poland.

Density
1,918/km²
people per km²
Founded
1150

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 18°C by the end.

A typical May day in Bytów reaches about 17°C in the afternoon and slips back to 7°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 23°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1155
2155
3155
4156
5156
6156
7166
8166
9166
10166
11166
12166
13167
14167
15167
16167
17177
18177
19177
20177
21178
22178
23178
24178
25188
26188
27188
28189
29189
30189
31189

How May really feels in Bytów

Once humidity and wind are folded in, May 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

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

Bytów weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°5211.367.70.0
Feb / -3°4310.35.79.40.0
Mar / -1°5010.84.211.50.4
Apr12° / 419.81.213.73.0
May17° / 6711.60.115.75.1
Jun19° / 10°7913016.85.7
Jul21° / 13°9813.8016.46.0
Aug21° / 13°8013.5014.66.0
Sep17° / 6210.7012.55.2
Oct12° / 5611.50.210.22.8
Nov / 45102.28.20.5
Dec / -2°5311.65.47.20.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44654
54555
64555
74555
84555
94456
104555
114456
124456
134555
144456
154555
164555
174654
184654
194753
204753
214852
224852
234852
244852
254852
264852
274852
284852
294852
304852
314852

Chance of precipitation in May

Any precipitation

Bytów gets around 67 mm of rain and snow over 11.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 38% and peaks near 40% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
233
333
434
534
635
736
836
937
1037
1138
1239
1339
1439
1540
1640
1740
1840
1940
2039
2139
2239
2339
2439
2539
2639
2738
2838
2938
3038
3138

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
110000
29910
39910
49910
59910
69910
79910
89910
99910
109820
119820
129820
139730
149730
159640
169640
179550
189550
199460
209361
219271
229271
239181
249181
259091
269091
2788102
2888102
2987112
3087112
3187112

Wind in May

Winds average 13 km/h in May.

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

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 48 min at the start of May to 16 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 102 minutes over May. Sunrise moves from 4:23 AM to 3:34 AM, and sunset from 7:11 PM to 8:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.84:237:11
214.94:217:13
314.94:197:15
415.04:177:17
515.14:157:19
615.14:137:20
715.24:117:22
815.34:097:24
915.34:077:26
1015.44:057:28
1115.44:037:30
1215.54:017:31
1315.64:007:33
1415.63:587:35
1515.73:567:37
1615.73:547:38
1715.83:537:40
1815.83:517:42
1915.93:497:43
2016.03:487:45
2116.03:467:47
2216.13:457:48
2316.13:437:50
2416.23:427:51
2516.23:417:53
2616.23:397:54
2716.33:387:56
2816.33:377:57
2916.43:367:59
3016.43:358:00
3116.53:348:01

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.23 kWh/m².

For context, solar energy here swings from a low near 0.42 kWh/m² to a high of 5.36 kWh/m² in June across the year — May's 5.23 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.2Bright
165.2Bright
175.2Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.4Bright
235.4Bright
245.4Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Bytów?

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

5.1
Sightseeing
5th-best month of the year
1.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Bytów for sightseeing.

What to pack for Bytów in May

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

In May, Bytów sees daytime highs around 17°C and nights near 7°C. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

Sea temperature near Bytów in May

The nearest coast averages about 9°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 64 km away) is warmest in August at about 19°C and coldest in February near 3°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
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr5Bracing
May9Bracing
Jun14Bracing
Jul17Cool
Aug19Cool
Sep16Cool
Oct13Bracing
Nov9Bracing
Dec6Bracing

UV index in Bytów in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bytów peaks around June 18 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 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 18UV 6Dec 20UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul6High
Aug5High
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Bytów?

Bytów sits at 54.2°N, 17.5°E, 122 m above sea level, in Poland. The nearest listed city is Kościerzyna, 32 km away.

LęborkSłupskKartuzyChojniceUstkaWejherowoOsowa

Topography around Bytów

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

Within 3 km, the terrain around Bytów has only modest variations in elevation — a maximum elevation change of 122 m around an average of 156 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 198 m; within 80 km, significant variations in elevation — a maximum elevation change of 339 m.

The land around Bytów is covered by trees (32%), cropland (29%) and grassland (24%) within 3 km, trees (56%) and cropland (20%) within 16 km, and trees (49%) and cropland (26%) within 80 km.

3 km
122 m
16 km
198 m
80 km
339 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Kościerzyna 32 km · Lębork 44 km · Słupsk 44 km · Kartuzy 49 km · Chojnice 53 km · Ustka 61 km · Wejherowo 68 km · Osowa 70 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 Bytów (54.1706°, 17.4919°, elevation 122 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).