Kastamonu weather in May

In May, Kastamonu sees average daytime highs of 19°C and overnight lows near 7°C, with 72 mm of precipitation across 13.6 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 21°C by the end. The sky is clear or mostly clear about 33% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 42 min by month's end. Set against the rest of the year, May is Kastamonu's 7th-clearest and 7th-windiest month. For the whole year in context, see Kastamonu's year-round climate.

Daytime high
19°
5th warmest
Overnight low
8th coldest
Precipitation
72 mm
13.6 wet days
Daylight
14 h 18 min
4:32 AM – 6:51 PM
Cloud cover
55%
7th clearest
Wind
7 km/h
7th windiest
Solar energy
5.77 kWh/m²
Travel score
5.7
out of 10

Kastamonu is central district and city in Kastamonu Province, Turkey.

Air quality
High
PM2.5 29.2 µg/m³ · 2019
Density
85/km²
people per km²

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 21°C by the end.

A typical May day in Kastamonu 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 13°C and 25°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1175
2175
3175
4176
5176
6186
7186
8186
9186
10187
11187
12197
13197
14197
15197
16198
17198
18208
19208
20208
21208
22208
23209
24209
25209
26209
27209
28209
29219
30219
31219

How May really feels in Kastamonu

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.

Kastamonu weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°51119.49.40.0
Feb / -3°5210.98.810.30.2
Mar / -1°6512.27.411.71.7
Apr14° / 6413.22.413.13.9
May19° / 7213.60.114.35.7
Jun23° / 11°5811.8014.96.8
Jul26° / 13°306014.77.8
Aug27° / 14°245.7013.77.8
Sep23° / 10°336.9012.37.6
Oct18° / 518.60.610.95.9
Nov11° / 447.93.49.72.8
Dec / -2°5910.67.79.10.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
25050
35050
45149
55149
65248
75248
85347
95446
105545
115545
125644
135743
145644
155743
165743
175743
185842
195743
205743
215743
225644
235644
245545
255545
265446
275545
285446
295545
305545
315545

Chance of precipitation in May

Any precipitationSnow

Kastamonu gets around 72 mm of rain and snow over 13.6 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 43% and peaks near 49% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1412
2412
3411
4411
5421
6421
7421
8421
9421
10420
11410
12410
13410
14410
15410
16410
17410
18410
19420
20420
21430
22440
23440
24450
25460
26470
27480
28480
29490
30490
31490

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
24991
25991
26991
27982
28982
29973
30973
31964

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 4:49 AM to 4:20 AM, and sunset from 6:35 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.84:496:35
213.84:486:36
313.84:476:37
413.94:456:38
513.94:446:39
614.04:436:40
714.04:426:41
814.04:406:42
914.14:396:43
1014.14:386:44
1114.14:376:45
1214.24:366:47
1314.24:356:48
1414.24:346:49
1514.34:336:50
1614.34:326:51
1714.34:316:52
1814.44:306:53
1914.44:296:54
2014.44:286:55
2114.54:276:56
2214.54:266:57
2314.54:256:57
2414.64:256:58
2514.64:246:59
2614.64:237:00
2714.64:237:01
2814.74:227:02
2914.74:217:03
3014.74:217:04
3114.74:207:04

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.77 kWh/m².

For context, solar energy here swings from a low near 1.61 kWh/m² to a high of 6.68 kWh/m² in July across the year — May's 5.77 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
316.0Bright
Planning a trip in May

Is May a good time to visit Kastamonu?

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

5.7
Sightseeing
6th-best month of the year
2.4
Beach & pool
5th-best month of the year

May is a reasonable time to visit Kastamonu for sightseeing.

What to pack for Kastamonu in May

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

In May, Kastamonu sees daytime highs around 19°C and nights near 7°C. Worth packing: a warm layer, rain gear and sun protection. About 14 days see rain.

a warm layerrain gearsun protection

UV index in Kastamonu in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kastamonu peaks around August 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowAug 10UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar3Moderate
Apr7High
May7Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep7Very high
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Kastamonu 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 Kastamonu is worst in April — around 41 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (December, 21 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Kastamonu's WHO annual average of 29.2 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1941 µg/m³Dec 2122 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb26Moderate
Mar40Poor
Apr41Poor
May40Poor
Jun32Moderate
Jul25Moderate
Aug25Moderate
Sep25Moderate
Oct27Moderate
Nov25Moderate
Dec21Moderate
Location & terrain

Where is Kastamonu?

Kastamonu sits at 41.4°N, 33.8°E, 786 m above sea level, in Turkey. The nearest listed city is Taşköprü, 39 km away.

SafranboluİskilipOsmancıkÇerkeş

Topography around Kastamonu

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

Within 3 km, the terrain around Kastamonu has significant variations in elevation — a maximum elevation change of 317 m around an average of 884 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 791 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,562 m.

The land around Kastamonu is covered by trees (49%) and artificial surfaces (22%) within 3 km, trees (45%), cropland (32%) and grassland (20%) within 16 km, and trees (64%) and grassland (23%) within 80 km.

3 km
317 m
16 km
791 m
80 km
2,562 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Taşköprü 39 km · Tosya 46 km · Boyabat 83 km · Çankırı 88 km · Safranbolu 91 km · İskilip 92 km · Osmancık 97 km · Çerkeş 97 km

Turkey travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$18,599
2025
Happiness
5.3 / 10
World Happiness, 2025
Homicide rate
3.2
per 100k, 2023
Road deaths
6.7
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 488
Religion
Muslim 100%other 0%

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 Kastamonu (41.3781°, 33.7753°, elevation 786 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).