Santyoku weather in May

In May, Santyoku sees average daytime highs of 18°C and overnight lows near 14°C, with 76 mm of rain across 7.3 wet days and about 14 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 19°C by the end. The sky is clear or mostly clear about 40% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Santyoku's 8th-clearest and 7th-windiest month. For the whole year in context, see Santyoku's year-round climate.

Daytime high
18°
6th warmest
Overnight low
14°
7th coldest
Rainfall
76 mm
7.3 wet days
Daylight
14 hours
5:19 AM – 7:20 PM
Cloud cover
54%
8th clearest
Wind
15 km/h
7th windiest
Solar energy
6 kWh/m²
Travel score
6.2
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 16°C in the first days to 19°C by the end.

A typical May day in Santyoku reaches about 18°C in the afternoon and slips back to 14°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 21°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11612
21612
31612
41712
51712
61712
71713
81713
91713
101713
111713
121713
131813
141813
151814
161814
171814
181814
191814
201814
211914
221915
231915
241915
251915
261915
271915
281915
291916
301916
312016

How May really feels in Santyoku

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.

Santyoku weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°527.14.39.70.0
Feb / 486.83.810.60.3
Mar / 638.6311.72.0
Apr14° / 727.70.412.94.4
May18° / 14°767.30146.2
Jun21° / 18°907.9014.56.7
Jul24° / 22°17612.2014.36.4
Aug25° / 23°18412.7013.46.3
Sep22° / 19°18210.6012.36.5
Oct18° / 14°857.70116.3
Nov12° / 667.60.4103.7
Dec / 445.81.79.50.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25644
35545
45446
55446
65347
75248
85248
95248
105248
115149
125149
135149
145149
155347
165347
175347
185347
195446
205545
215545
225545
235545
245545
255545
265545
275545
285545
295446
305446
315248

Chance of precipitation in May

Any precipitation

Santyoku gets around 76 mm of rain over 7.3 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 24% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
325
425
525
626
726
826
926
1026
1126
1226
1326
1426
1525
1625
1725
1824
1924
2024
2123
2223
2322
2422
2521
2621
2721
2820
2920
3020
3119

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 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19460
29460
39370
49370
59280
69190
79190
890100
989110
1089110
1188120
1286131
1385141
1484151
1582171
1681181
1779201
1877221
1975232
2073252
2171272
2268293
2366313
2464333
2562344
2659365
2756386
2853407
2949428
30464410
31434512

Wind in May

Winds average 15 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 24 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 5:35 AM to 5:10 AM, and sunset from 7:06 PM to 7:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:357:06
213.65:347:07
313.65:327:08
413.65:317:09
513.75:307:10
613.75:297:11
713.75:287:12
813.85:277:13
913.85:267:14
1013.85:257:14
1113.95:247:15
1213.95:237:16
1313.95:227:17
1413.95:217:18
1514.05:207:19
1614.05:197:20
1714.05:197:21
1814.15:187:21
1914.15:177:22
2014.15:167:23
2114.15:157:24
2214.25:157:25
2314.25:147:26
2414.25:137:26
2514.25:137:27
2614.35:127:28
2714.35:127:29
2814.35:117:30
2914.35:117:30
3014.35:107:31
3114.45:107:32

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 6 kWh/m² in May across the year — May's 6 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
166.0Bright
176.0Bright
186.0Intense
196.0Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.3Intense
Planning a trip in May

Hazard calendar for Santyoku

In seasonPeak

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

Santyoku sits in the Pacific typhoon belt; the season peaks July–October.

Santyoku's rainy season runs June–October, 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 Santyoku?

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

6.2
Sightseeing
6th-best month of the year
2.0
Beach & pool
6th-best month of the year

May is a reasonable time to visit Santyoku for sightseeing.

What to pack for Santyoku in May

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

In May, Santyoku sees daytime highs around 18°C and nights near 14°C. Pack sun protection. About 7 days see rain.

sun protection

Sea temperature near Santyoku in May

The nearest coast averages about 15°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 19 km away) is warmest in August at about 24°C and coldest in February near 11°C.

It's comfortable for a long swim from Jul 1 to Oct 17 — about 3.6 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb11Bracing
Mar11Bracing
Apr13Bracing
May15Cool
Jun19Cool
Jul22Refreshing
Aug24Warm
Sep23Refreshing
Oct20Refreshing
Nov17Cool
Dec14Bracing

UV index in Santyoku 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 Santyoku peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateAug 16UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7High
Jun7High
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Santyoku 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 Santyoku is worst in March — around 40 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (September, 17 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 2239 µg/m³Sep 1817 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb30Moderate
Mar40Poor
Apr38Poor
May35Moderate
Jun30Moderate
Jul24Moderate
Aug21Moderate
Sep17Moderate
Oct20Moderate
Nov24Moderate
Dec22Moderate
Location & terrain

Where is Santyoku?

Santyoku sits at 37.4°N, 129.2°E, 23 m above sea level, in South Korea. The nearest listed city is Donghae City, 13 km away.

GangneungJumunjinNeietsuPyeongchangYeongjuSokcho

Topography around Santyoku

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

Within 3 km, the terrain around Santyoku has significant variations in elevation — a maximum elevation change of 265 m around an average of 50 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,347 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,549 m.

The land around Santyoku is covered by trees (50%), water (22%) and artificial surfaces (20%) within 3 km, trees (47%) and water (44%) within 16 km, and trees (62%) and water (33%) within 80 km.

3 km
265 m
16 km
1,347 m
80 km
1,549 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Donghae City 13 km · T’aebaek 34 km · Gangneung 44 km · Jumunjin 59 km · Neietsu 68 km · Pyeongchang 69 km · Yeongju 84 km · Sokcho 99 km

South Korea travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
220 V · 60 Hz
Prices
≈ 57% of US
price level, 2025
GDP per capita
$36,227
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.5
per 100k, 2023
Road deaths
8.6
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 522
Religion
none 60%Protestant 17%Buddhist 16%Catholic 6%

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 Santyoku (37.4406°, 129.1708°, elevation 23 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).