Naju weather in May

In May, Naju sees average daytime highs of 24°C and overnight lows near 13°C, with 99 mm of rain across 8.2 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 26°C by the end. The sky is clear or mostly clear about 36% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of May to 14 h 12 min by month's end. Set against the rest of the year, May is Naju's 6th-clearest and 6th-windiest month. For the whole year in context, see Naju's year-round climate.

Daytime high
24°
5th warmest
Overnight low
13°
8th coldest
Rainfall
99 mm
8.2 wet days
Daylight
13 h 48 min
5:34 AM – 7:24 PM
Cloud cover
58%
6th clearest
Wind
10 km/h
6th windiest
Solar energy
5.86 kWh/m²
Travel score
7.1
out of 10

Naju is city in South Korea.

Density
70/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 22°C in the first days to 26°C by the end.

A typical May day in Naju reaches about 24°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 28°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12210
22210
32211
42211
52211
62311
72311
82311
92312
102312
112312
122312
132312
142412
152412
162413
172413
182413
192413
202413
212513
222514
232514
242514
252514
262514
272614
282615
292615
302615
312615

How May really feels in Naju

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.

Naju 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 / -3°264.51.99.90.3
Feb / -1°355.10.910.71.4
Mar13° / 647.30.611.74.0
Apr19° / 877.6012.96.4
May24° / 13°998.2013.87.1
Jun27° / 18°16410.3014.36.1
Jul29° / 22°24316.4014.14.5
Aug30° / 23°22515.9013.34.2
Sep27° / 18°1429.4012.26.5
Oct22° / 11°534.6011.17.6
Nov15° / 466.10.110.24.9
Dec / -1°2741.19.71.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% 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 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25050
34951
44951
54951
64852
74852
84753
94654
104654
114753
124654
134654
144654
154753
164753
174654
184753
194753
204753
214852
224852
234852
244951
254951
264951
274951
284951
295050
304951
314951

Chance of precipitation in May

Any precipitation

Naju gets around 99 mm of rain over 8.2 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 26% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
428
528
628
729
829
929
1028
1128
1228
1328
1428
1527
1627
1727
1826
1926
2026
2125
2225
2325
2425
2524
2624
2724
2824
2924
3024
3124

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 63% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1791461
2771571
3771571
4761671
5751771
6741781
7731881
8731881
9721981
10712081
11712081
12702181
13692281
14682381
15682381
16662491
17652591
186326101
196227101
206028111
215929111
225829121
235530132
245431132
255232142
265033152
274834162
284535173
294336183
304036203
313837224

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:49 AM to 5:26 AM, and sunset from 7:12 PM to 7:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:497:12
213.45:477:13
313.55:467:14
413.55:457:15
513.55:447:15
613.55:437:16
713.65:427:17
813.65:417:18
913.65:407:19
1013.75:397:20
1113.75:397:20
1213.75:387:21
1313.85:377:22
1413.85:367:23
1513.85:357:24
1613.85:347:24
1713.95:347:25
1813.95:337:26
1913.95:327:27
2013.95:327:27
2114.05:317:28
2214.05:307:29
2314.05:307:30
2414.05:297:30
2514.05:287:31
2614.15:287:32
2714.15:277:33
2814.15:277:33
2914.15:277:34
3014.15:267:35
3114.25:267:35

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.86 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 5.86 kWh/m² in May across the year — May's 5.86 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
216.0Bright
226.0Bright
236.0Bright
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Hazard calendar for Naju

In seasonPeak

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

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

Naju's rainy season runs June–September, 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 Naju?

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
5.9
Beach & pool
3rd-best month of the year

May is one of the better times to visit Naju for general sightseeing.

What to pack for Naju in May

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

In May, Naju sees daytime highs around 24°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Naju in May

The nearest coast averages about 14°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 49 km away) is warmest in August at about 25°C and coldest in February near 6°C.

It's comfortable for a long swim from Jun 26 to Oct 11 — about 3.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan8Bracing
Feb6Bracing
Mar7Bracing
Apr10Bracing
May14Bracing
Jun19Cool
Jul23Refreshing
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Cool
Dec11Bracing

UV index in Naju in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Naju peaks around July 12 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 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 12UV 8Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug7Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Naju 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 Naju is worst in March — around 61 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (August, 28 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorModerateMar 1960 µg/m³Aug 1129 µg/m³
PM2.5 (µg/m³)Level
Jan41Poor
Feb48Poor
Mar61Unhealthy
Apr54Poor
May45Poor
Jun39Poor
Jul29Moderate
Aug28Moderate
Sep33Moderate
Oct35Moderate
Nov38Poor
Dec34Moderate
Location & terrain

Where is Naju?

Naju sits at 35.0°N, 126.7°E, 25 m above sea level, in South Korea. The nearest listed city is Masan, 15 km away.

Mokpo

Topography around Naju

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

Within 3 km, the terrain around Naju has significant variations in elevation — a maximum elevation change of 429 m around an average of 56 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 457 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,477 m.

The land around Naju is covered by trees (46%) and cropland (26%) within 3 km, trees (45%) and cropland (37%) within 16 km, and trees (44%), water (32%) and cropland (20%) within 80 km.

3 km
429 m
16 km
457 m
80 km
1,477 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Masan 15 km · Muan 22 km · Gwangju 23 km · Hwasun 25 km · Yeongam 25 km · Jangseong 30 km · Yeonggwang 33 km · Mokpo 38 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 Naju (35.0292°, 126.7175°, elevation 25 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).