Biysk weather in May

In May, Biysk sees average daytime highs of 19°C and overnight lows near 7°C, with 61 mm of precipitation across 10.9 wet days and about 15.5 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 22°C by the end. The sky is clear or mostly clear about 28% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 36 min at the start of May to 16 h 12 min by month's end. Set against the rest of the year, May is Biysk's 4th-clearest and 1st-windiest month. For the whole year in context, see Biysk's year-round climate.

Daytime high
19°
4th warmest
Overnight low
9th coldest
Precipitation
61 mm
10.9 wet days
Daylight
15 h 30 min
4:30 AM – 8:00 PM
Cloud cover
60%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.87 kWh/m²
Travel score
6.0
out of 10

Biysk is city in southeastern Russia.

Density
739/km²
people per km²
Founded
1709

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 22°C by the end.

A typical May day in Biysk reaches about 19°C in the afternoon and slips back to 7°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 28°C. Set against its neighbours, May runs about 8°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1164
2164
3174
4174
5175
6175
7185
8185
9186
10186
11196
12196
13197
14197
15197
16207
17207
18208
19208
20208
21208
22218
23219
24219
25219
26219
272110
282210
292210
302210
312210

How May really feels in Biysk

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.

Biysk weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-12° / -20°2168.380.0
Feb-8° / -18°195.66.79.50.0
Mar-0° / -11°256.76.411.50.0
Apr11° / -0°4492.713.62.9
May19° / 6110.90.315.56.0
Jun24° / 13°6311.3016.56.6
Jul26° / 16°7412.7016.16.2
Aug24° / 13°6210.4014.56.8
Sep18° / 499.90.212.45.7
Oct10° / 4910.33.110.32.1
Nov-2° / -9°49119.98.50.0
Dec-9° / -17°349.211.27.50.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34258
44258
54258
64357
74357
84357
94456
104456
114456
124456
134456
144456
154456
164456
174357
184456
194456
204555
214555
224555
234654
244555
254654
264753
274852
284852
294852
304951
314951

Chance of precipitation in May

Any precipitationSnow

Biysk gets around 61 mm of rain and snow over 10.9 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 36% and peaks near 38% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1344
2344
3343
4343
5343
6333
7332
8332
9332
10331
11331
12341
13341
14351
15351
16361
17361
18371
19370
20370
21370
22380
23380
24380
25380
26380
27380
28380
29380
30380
31380

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
810000
99910
109910
119910
129910
139910
149910
159910
169910
179910
189820
199820
209730
219730
229640
239550
249460
259271
269271
279181
289091
2989101
3087121
3185132

Wind in May

Winds average 11 km/h in May, the windiest month of the year.

Across May, daily wind ranges from about 10 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
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 36 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 96 minutes over May. Sunrise moves from 4:58 AM to 4:11 AM, and sunset from 7:35 PM to 8:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:587:35
214.74:567:37
314.84:547:39
414.84:527:41
514.94:507:42
614.94:487:44
715.04:467:46
815.14:447:47
915.14:427:49
1015.24:407:51
1115.24:397:52
1215.34:377:54
1315.34:357:56
1415.44:347:57
1515.44:327:59
1615.54:308:00
1715.64:298:02
1815.64:278:04
1915.74:268:05
2015.74:248:07
2115.84:238:08
2215.84:228:10
2315.84:208:11
2415.94:198:13
2515.94:188:14
2616.04:178:15
2716.04:168:17
2816.14:148:18
2916.14:138:19
3016.14:128:21
3116.24:118:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.87 kWh/m².

For context, solar energy here swings from a low near 0.75 kWh/m² to a high of 6.32 kWh/m² in June across the year — May's 5.87 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.6Bright
65.6Bright
75.6Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
216.0Bright
226.0Bright
236.0Intense
246.0Intense
256.0Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.2Intense
316.2Intense
Planning a trip in May

Is May a good time to visit Biysk?

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

6.0
Sightseeing
4th-best month of the year
2.8
Beach & pool
4th-best month of the year

May is a reasonable time to visit Biysk for sightseeing.

What to pack for Biysk in May

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

In May, Biysk sees daytime highs around 19°C and nights near 7°C. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

UV index in Biysk in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Biysk peaks around July 19 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 19UV 6Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar2Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low

Air quality in Biysk 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 Biysk is worst in April — around 15 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (December, 5 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodGoodApr 1414 µg/m³Dec 165 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar11Good
Apr15Moderate
May9Good
Jun8Good
Jul13Moderate
Aug9Good
Sep7Good
Oct7Good
Nov7Good
Dec5Good
Location & terrain

Where is Biysk?

Biysk sits at 52.5°N, 85.2°E, 184 m above sea level, in Russia. The nearest listed city is Mayma, 76 km away.

Topography around Biysk

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

Within 3 km, the terrain around Biysk has only modest variations in elevation — a maximum elevation change of 75 m around an average of 188 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 110 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,208 m.

The land around Biysk is covered by trees (47%) and artificial surfaces (36%) within 3 km, trees (35%), cropland (29%) and grassland (25%) within 16 km, and cropland (37%), trees (31%) and grassland (30%) within 80 km.

3 km
75 m
16 km
110 m
80 km
1,208 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Mayma 76 km · Gorno-Altaysk 81 km · Yuzhnyy 129 km · Novoaltaysk 129 km · Zarinsk 132 km · Barnaul 135 km · Novosilikatnyy 136 km · Aleysk 164 km

Russia travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$17,547
2025
Happiness
5.8 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
6.8
per 100k, 2021
Road deaths
12
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 521
Religion
other Christian 2%

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 Biysk (52.5342°, 85.1966°, elevation 184 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).