Guri-si weather in May

In May, Guri-si sees average daytime highs of 23°C and overnight lows near 12°C, with 104 mm of rain across 8.5 wet days and about 14 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 25°C by the end. The sky is clear or mostly clear about 39% 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 Guri-si's 8th-clearest and 5th-windiest month. For the whole year in context, see Guri-si's year-round climate.

Daytime high
23°
5th warmest
Overnight low
12°
8th coldest
Rainfall
104 mm
8.5 wet days
Daylight
14 hours
5:27 AM – 7:28 PM
Cloud cover
54%
8th clearest
Wind
8 km/h
5th windiest
Solar energy
5.75 kWh/m²
Travel score
7.1
out of 10

Guri-si is city in South Korea.

Density
5,863/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 21°C in the first days to 25°C by the end.

A typical May day in Guri-si reaches about 23°C in the afternoon and slips back to 12°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 27°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
1219
2219
3219
42110
52110
62110
72110
82210
92211
102211
112211
122211
132211
142211
152212
162312
172312
182312
192312
202312
212313
222413
232413
242413
252413
262413
272414
282514
292514
302514
312514

How May really feels in Guri-si

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.

Guri-si 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 / -7°213.82.69.70.0
Feb / -5°284.2210.60.3
Mar11° / -0°436.41.611.72.8
Apr17° / 797.30.112.95.9
May23° / 12°1048.50147.1
Jun26° / 17°1359.3014.56.5
Jul28° / 21°34017.2014.34.8
Aug29° / 22°27715.7013.44.8
Sep25° / 16°1348.4012.36.9
Oct19° / 585.50117.0
Nov11° / 507.30.7103.1
Dec / -5°254.72.19.50.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45248
55248
65248
75248
85248
95149
105149
115050
125050
135050
145050
155050
165050
175050
185149
195149
205149
215248
225248
235248
245248
255248
265248
275248
285248
295149
305149
315050

Chance of precipitation in May

Any precipitation

Guri-si gets around 104 mm of rain over 8.5 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 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
228
328
428
529
629
729
829
929
1029
1130
1230
1330
1429
1529
1629
1729
1829
1929
2028
2128
2227
2327
2426
2525
2625
2724
2824
2923
3023
3122

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 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
190820
289920
389920
4881020
5871120
6861220
7861220
8851320
9841420
10841420
11831520
12821620
13811720
14801820
15791920
16782020
17762130
18742330
19722440
20692650
21682750
22652960
23633070
24603280
25573490
265535100
275237110
284938130
294639150
304340170
314041191

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
317calm

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 5:43 AM to 5:17 AM, and sunset from 7:15 PM to 7:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:437:15
213.65:417:16
313.65:407:16
413.65:397:17
513.75:387:18
613.75:377:19
713.75:367:20
813.85:357:21
913.85:347:22
1013.85:337:23
1113.95:327:24
1213.95:317:25
1313.95:307:26
1414.05:297:26
1514.05:287:27
1614.05:277:28
1714.05:267:29
1814.15:267:30
1914.15:257:31
2014.15:247:32
2114.25:237:32
2214.25:237:33
2314.25:227:34
2414.25:217:35
2514.35:217:36
2614.35:207:37
2714.35:197:37
2814.35:197:38
2914.35:187:39
3014.45:187:40
3114.45:177:40

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.75 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.75 kWh/m² in May across the year — May's 5.75 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
276.0Bright
286.0Bright
296.0Bright
306.0Bright
316.0Bright
Planning a trip in May

Hazard calendar for Guri-si

In seasonPeak

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

Guri-si sits in the Pacific typhoon belt; the season peaks July–October.

Guri-si'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 Guri-si?

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

7.1
Sightseeing
1st-best month of the year
5.2
Beach & pool
5th-best month of the year

May is one of the better times to visit Guri-si for general sightseeing.

What to pack for Guri-si in May

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

In May, Guri-si sees daytime highs around 23°C and nights near 12°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Guri-si in May

The nearest coast averages about 12°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 52 km away) is warmest in August at about 24°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 11 to Oct 13 — about 3.1 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan6Bracing
Feb4Bracing
Mar5Bracing
Apr8Bracing
May12Bracing
Jun17Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct20Cool
Nov15Bracing
Dec10Bracing

UV index in Guri-si 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 Guri-si peaks around August 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 11UV 8Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun7High
Jul8Very high
Aug8Very high
Sep7Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Guri-si 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 Guri-si is worst in March — around 123 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyMar 16121 µg/m³Aug 978 µg/m³
PM2.5 (µg/m³)Level
Jan106Unhealthy
Feb108Unhealthy
Mar123Unhealthy
Apr104Unhealthy
May96Unhealthy
Jun91Unhealthy
Jul79Unhealthy
Aug78Unhealthy
Sep97Unhealthy
Oct115Unhealthy
Nov118Unhealthy
Dec100Unhealthy
Location & terrain

Where is Guri-si?

Guri-si sits at 37.6°N, 127.1°E, 31 m above sea level, in South Korea. The nearest listed city is Wabu, 7.0 km away.

Topography around Guri-si

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

Within 3 km, the terrain around Guri-si has significant variations in elevation — a maximum elevation change of 271 m around an average of 51 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 783 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,443 m.

The land around Guri-si is covered by artificial surfaces (45%) and trees (38%) within 3 km, trees (54%) and artificial surfaces (38%) within 16 km, and trees (55%) within 80 km.

3 km
271 m
16 km
783 m
80 km
1,443 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Wabu 7.0 km · Namyangju 8.0 km · Hanam 9.0 km · Seoul 15 km · Hwado 16 km · Seongnam-si 18 km · Uijeongbu-si 18 km · Gwangju 23 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 Guri-si (37.5986°, 127.1394°, elevation 31 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).