Sil-li weather in May

In May, Sil-li sees average daytime highs of 22°C and overnight lows near 12°C, with 97 mm of rain across 7.7 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 24°C by the end. The sky is clear or mostly clear about 41% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 36 min by month's end. Set against the rest of the year, May is Sil-li's 9th-clearest and 6th-windiest month. For the whole year in context, see Sil-li's year-round climate.

Daytime high
22°
5th warmest
Overnight low
12°
8th coldest
Rainfall
97 mm
7.7 wet days
Daylight
14 h 12 min
5:29 AM – 7:39 PM
Cloud cover
52%
9th clearest
Wind
11 km/h
6th windiest
Solar energy
5.74 kWh/m²
Travel score
7.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 24°C by the end.

A typical May day in Sil-li reaches about 22°C in the afternoon and slips back to 12°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°C. Set against its neighbours, May runs about 6°C warmer than April and about 4°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
1199
22010
32010
42010
52010
62010
72011
82011
92111
102111
112111
122112
132112
142112
152212
162212
172212
182213
192213
202213
212313
222313
232313
242314
252314
262314
272414
282414
292415
302415
312415

How May really feels in Sil-li

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.

Sil-li weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -10°112.82.69.50.0
Feb / -6°213.62.410.40.0
Mar / -1°274.41.111.71.9
Apr16° / 556.60.1135.4
May22° / 12°977.7014.17.1
Jun26° / 18°1189.9014.76.7
Jul28° / 22°29414.9014.55.3
Aug29° / 22°22714013.65.2
Sep25° / 16°1026.7012.37.4
Oct18° / 506.50116.6
Nov / 517.10.99.82.1
Dec / -7°245.53.39.30.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25446
35347
45248
55149
65149
75149
85050
95050
105149
115149
125149
135248
145248
155347
165347
175446
185545
195644
205644
215644
225743
235743
245743
255842
265842
275743
285644
295545
305545
315545

Chance of precipitation in May

Any precipitation

Sil-li gets around 97 mm of rain over 7.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
627
727
827
927
1027
1127
1226
1326
1426
1525
1625
1725
1824
1924
2024
2123
2223
2323
2423
2523
2623
2722
2823
2923
3023
3123

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 71% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
194600
293700
393700
492800
591900
691900
7901000
8901000
9891100
10871210
11861310
12851410
13841510
14821710
15791920
16772120
17742330
18712630
19682840
20663040
21633250
22593560
23563770
24533980
25504190
264742100
274444120
284144140
293845171
303545191
313245221

Wind in May

Winds average 11 km/h in May.

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
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 5:46 AM to 5:19 AM, and sunset from 7:25 PM to 7:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:467:25
213.75:457:26
313.75:447:27
413.85:427:28
513.85:417:29
613.85:407:30
713.95:397:31
813.95:387:32
913.95:377:32
1014.05:357:33
1114.05:347:34
1214.05:337:35
1314.15:327:36
1414.15:317:37
1514.15:307:38
1614.25:297:39
1714.25:297:40
1814.25:287:41
1914.35:277:42
2014.35:267:43
2114.35:257:44
2214.35:247:45
2314.45:247:46
2414.45:237:46
2514.45:227:47
2614.45:227:48
2714.55:217:49
2814.55:207:50
2914.55:207:51
3014.55:197:51
3114.65:197:52

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.74 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.22 kWh/m² to a high of 5.74 kWh/m² in May across the year — May's 5.74 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.7Bright
165.7Bright
175.7Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.9Bright
235.9Bright
245.9Bright
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Hazard calendar for Sil-li

In seasonPeak

In May, Sil-li sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Sil-li sits in the Pacific typhoon belt; the season peaks July–October.

Sil-li's rainy season runs July–August, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Sil-li?

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

7.1
Sightseeing
2nd-best month of the year
4.7
Beach & pool
5th-best month of the year

May is one of the better times to visit Sil-li for general sightseeing.

What to pack for Sil-li in May

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

In May, Sil-li sees daytime highs around 22°C and nights near 12°C. Worth packing: sun protection. About 8 days see rain.

sun protection

Sea temperature near Sil-li in May

The nearest coast averages about 13°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 16 km away) is warmest in August at about 25°C and coldest in February near -0°C.

It's comfortable for a long swim from Jul 3 to Oct 2 — about 3 months when the water holds above 20°C.

0°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan2Bracing
Feb0Bracing
Mar2Bracing
Apr7Bracing
May13Bracing
Jun18Cool
Jul22Refreshing
Aug25Warm
Sep23Refreshing
Oct18Cool
Nov12Bracing
Dec6Bracing

UV index in Sil-li 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 Sil-li peaks around August 18 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 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 18UV 8Dec 19UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar3Moderate
Apr5High
May7High
Jun6High
Jul7High
Aug8Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Sil-li 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 Sil-li is worst in January — around 106 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (August, 50 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyJan 17104 µg/m³Aug 1050 µg/m³
PM2.5 (µg/m³)Level
Jan106Unhealthy
Feb94Unhealthy
Mar94Unhealthy
Apr80Unhealthy
May68Unhealthy
Jun59Unhealthy
Jul50Poor
Aug50Poor
Sep67Unhealthy
Oct81Unhealthy
Nov90Unhealthy
Dec91Unhealthy
Location & terrain

Where is Sil-li?

Sil-li sits at 39.5°N, 125.5°E, 9 m above sea level, in North Korea. The nearest listed city is Ch’ŏsal-li, 11 km away.

SunanSunch’ŏnKaech’ŏn

Topography around Sil-li

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

Within 3 km, the terrain around Sil-li has only modest variations in elevation — a maximum elevation change of 30 m around an average of 7 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 408 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,229 m.

The land around Sil-li is covered by cropland (84%) within 3 km, cropland (74%) within 16 km, and cropland (36%), trees (34%) and water (24%) within 80 km.

3 km
30 m
16 km
408 m
80 km
1,229 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Ch’ŏsal-li 11 km · Paek'ak 12 km · Sinanju 16 km · Anju 21 km · Chŏngju 32 km · Sunan 38 km · Sunch’ŏn 40 km · Kaech’ŏn 43 km

North Korea travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
220 V · 50 Hz
Safe drinking water
67%
of population, 2023
Road deaths
24.2
per 100k/yr, 2019
Income group
Low
World Bank

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 Sil-li (39.4947°, 125.4736°, elevation 9 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. 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).