Hajnówka weather in May

In May, Hajnówka sees average daytime highs of 19°C and overnight lows near 8°C, with 70 mm of precipitation across 11.9 wet days and about 15.5 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 20°C by the end. The sky is clear or mostly clear about 25% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 42 min at the start of May to 16 h 12 min by month's end. Set against the rest of the year, May is Hajnówka's 4th-clearest and 9th-windiest month. For the whole year in context, see Hajnówka's year-round climate.

Daytime high
19°
4th warmest
Overnight low
8th coldest
Precipitation
70 mm
11.9 wet days
Daylight
15 h 30 min
3:36 AM – 7:08 PM
Cloud cover
64%
4th clearest
Wind
12 km/h
9th windiest
Solar energy
5.19 kWh/m²
Travel score
5.7
out of 10

Hajnówka is city and urban gmina of Poland.

Air quality
Elevated
PM2.5 21.8 µg/m³ · 2016
Density
1,041/km²
people per km²
Founded
1650

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 17°C in the first days to 20°C by the end.

A typical May day in Hajnówka reaches about 19°C in the afternoon and slips back to 8°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 25°C. Set against its neighbours, May runs about 6°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1176
2176
3176
4176
5176
6187
7187
8187
9187
10187
11187
12187
13188
14188
15188
16198
17198
18198
19198
20198
21199
22199
23199
24199
25209
26209
27209
28209
292010
302010
312010

How May really feels in Hajnówka

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.

Hajnówka weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -5°39107.27.90.0
Feb / -5°369.36.79.50.0
Mar / -2°4110.24.211.50.5
Apr13° / 489.81.313.63.5
May19° / 7011.90.115.55.7
Jun22° / 11°7112016.56.2
Jul24° / 14°8213.1016.16.4
Aug23° / 13°6710.6014.56.7
Sep18° / 599.4012.45.6
Oct11° / 489.80.610.32.9
Nov / 399.33.38.50.3
Dec / -3°42105.87.50.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24555
34555
44654
54555
64456
74357
84357
94357
104258
114060
124060
134060
143961
153961
163961
173961
183961
193961
203961
213961
224060
234159
244159
254159
264357
274357
284456
294555
304555
314654

Chance of precipitation in May

Any precipitation

Hajnówka gets around 70 mm of rain and snow over 11.9 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 41% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
235
335
436
537
638
738
839
940
1040
1141
1241
1341
1441
1541
1641
1741
1841
1940
2040
2139
2239
2338
2438
2537
2636
2736
2835
2935
3034
3134

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 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59820
69820
79730
89640
99640
109550
119460
129460
139370
149181
159181
169091
179091
189091
1988102
2088102
2188102
2286113
2386113
2486113
2584124
2684124
2783134
2883134
2982144
3081145
3180155

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 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
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 42 min at the start of May to 16 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 90 minutes over May. Sunrise moves from 4:03 AM to 3:17 AM, and sunset from 6:42 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:036:42
214.74:016:44
314.83:596:46
414.83:576:48
514.93:556:49
615.03:546:51
715.03:526:53
815.13:506:55
915.13:486:56
1015.23:466:58
1115.33:447:00
1215.33:437:01
1315.43:417:03
1415.43:397:05
1515.53:387:06
1615.53:367:08
1715.63:357:09
1815.63:337:11
1915.73:317:12
2015.73:307:14
2115.83:297:16
2215.83:277:17
2315.93:267:18
2415.93:257:20
2516.03:237:21
2616.03:227:23
2716.13:217:24
2816.13:207:25
2916.13:197:27
3016.23:187:28
3116.23:177:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.19 kWh/m².

For context, solar energy here swings from a low near 0.48 kWh/m² to a high of 5.49 kWh/m² in June across the year — May's 5.19 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.4Bright
265.4Bright
275.4Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Hajnówka?

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

5.7
Sightseeing
4th-best month of the year
2.2
Beach & pool
4th-best month of the year

May is a reasonable time to visit Hajnówka for sightseeing.

What to pack for Hajnówka in May

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

In May, Hajnówka sees daytime highs around 19°C and nights near 8°C. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

UV index in Hajnówka 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 Hajnówka 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 19 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 19UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low

Air quality in Hajnówka in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Hajnówka is worst in July — around 28 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 14 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Hajnówka's WHO annual average of 21.8 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJul 1227 µg/m³Dec 1614 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb20Moderate
Mar27Moderate
Apr27Moderate
May25Moderate
Jun27Moderate
Jul28Moderate
Aug25Moderate
Sep21Moderate
Oct17Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Hajnówka?

Hajnówka sits at 52.7°N, 23.6°E, 162 m above sea level, in Poland. The nearest listed city is Bielsk Podlaski, 27 km away.

BiałystokŁapySiemiatyczePruzhanyBrestSokółkaVaukavysk

Topography around Hajnówka

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

Within 3 km, the terrain around Hajnówka has only modest variations in elevation — a maximum elevation change of 43 m around an average of 169 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 81 m; within 80 km, only modest variations in elevation — a maximum elevation change of 163 m.

The land around Hajnówka is covered by trees (36%), cropland (26%) and grassland (22%) within 3 km, trees (58%) and cropland (29%) within 16 km, and trees (42%) and cropland (38%) within 80 km.

3 km
43 m
16 km
81 m
80 km
163 m
treesgrasslandcroplandartificial surfaces
May weather nearby: Bielsk Podlaski 27 km · Białystok 52 km · Łapy 54 km · Siemiatycze 60 km · Pruzhany 63 km · Brest 71 km · Sokółka 74 km · Vaukavysk 74 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 Hajnówka (52.7433°, 23.5812°, elevation 162 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).