Chios weather in May

In May, Chios sees average daytime highs of 22°C and overnight lows near 17°C, with 16 mm of rain across 2.9 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 68% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Chios's 5th-clearest and 12th-windiest month. For the whole year in context, see Chios's year-round climate.

Daytime high
22°
5th warmest
Overnight low
17°
7th coldest
Rainfall
16 mm
2.9 wet days
Daylight
14 h 06 min
5:09 AM – 7:14 PM
Cloud cover
30%
5th clearest
Wind
17 km/h
12th windiest
Solar energy
7.09 kWh/m²
Travel score
8.3
out of 10

Chios is Greek town on the homonymous island.

Founded
~899 BCE

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 20°C in the first days to 23°C by the end.

A typical May day in Chios reaches about 22°C in the afternoon and slips back to 17°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°C. Set against its neighbours, May runs about 4°C warmer than April and about 4°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12015
22016
32016
42016
52016
62016
72116
82116
92117
102117
112117
122117
132117
142117
152217
162217
172217
182218
192218
202218
212218
222218
232318
242318
252318
262318
272319
282319
292319
302319
312419

Chios weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan13° / 10°11711.59.63.5
Feb13° / 10°9610.310.53.7
Mar15° / 11°687.911.74.8
Apr18° / 14°375.6136.6
May22° / 17°162.914.18.3
Jun26° / 21°40.914.69.1
Jul28° / 23°00.114.48.7
Aug28° / 24°00.113.58.5
Sep25° / 21°161.812.39.1
Oct21° / 18°474.7117.9
Nov17° / 14°858.49.96.1
Dec14° / 11°13011.99.44.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 68% 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 19%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27822
37921
47921
57921
67921
78020
88020
98020
107921
117921
127921
137921
147921
157921
167921
177921
188020
198020
208020
218020
228119
238119
248218
258218
268218
278416
288416
298515
308515
318614

Chance of precipitation in May

Any precipitation

Chios gets around 16 mm of rain over 2.9 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 9% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
211
311
410
510
610
710
810
910
109
119
129
139
149
159
168
178
188
198
208
218
228
238
248
258
268
278
288
297
307
317

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the comfortable band about 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1623440
2613540
3583750
4563950
5544060
6514270
7494380
8474490
94644100
104445110
114245130
124046140
133846160
143646170
153447190
163247210
173047230
182847250
192647270
202547280
212346300
222246320
232146330
241945350
251845371
261744381
271644391
281543411
291442422
301441442
311340452

Wind in May

Winds average 17 km/h in May, the calmest month.

Across May, daily wind ranges from about 16 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3017light breeze
3117light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 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 48 minutes over May. Sunrise moves from 5:25 AM to 4:59 AM, and sunset from 7:00 PM to 7:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:257:00
213.65:247:01
313.65:237:02
413.75:227:03
513.75:217:04
613.85:197:05
713.85:187:06
813.85:177:07
913.95:167:08
1013.95:157:08
1113.95:147:09
1214.05:137:10
1314.05:127:11
1414.05:117:12
1514.05:107:13
1614.15:097:14
1714.15:097:15
1814.15:087:16
1914.25:077:17
2014.25:067:17
2114.25:057:18
2214.25:057:19
2314.35:047:20
2414.35:037:21
2514.35:037:22
2614.35:027:22
2714.45:017:23
2814.45:017:24
2914.45:007:25
3014.45:007:26
3114.44:597:26

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.09 kWh/m².

For context, solar energy here swings from a low near 2.05 kWh/m² to a high of 7.84 kWh/m² in June across the year — May's 7.09 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.9Intense
86.9Intense
96.9Intense
107.0Intense
117.0Intense
127.0Intense
137.0Intense
147.0Intense
157.1Intense
167.1Intense
177.1Intense
187.1Intense
197.2Intense
207.2Intense
217.2Intense
227.2Intense
237.3Intense
247.3Intense
257.3Intense
267.3Intense
277.4Intense
287.4Intense
297.4Intense
307.5Intense
317.5Intense
Planning a trip in May

Hazard calendar for Chios

In seasonPeak

None of Chios's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Chios's rainy season runs November–March, when most of the year's rain falls.

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

Is May a good time to visit Chios?

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

8.3
Sightseeing
5th-best month of the year
5.5
Beach & pool
5th-best month of the year

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

What to pack for Chios in May

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

In May, Chios sees daytime highs around 22°C and nights near 17°C. Pack sun protection.

sun protection

Sea temperature near Chios in May

The nearest coast averages about 19°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 23°C and coldest in March near 16°C.

It's comfortable for a long swim from Jun 1 to Oct 30 — about 5 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb16Cool
Mar16Cool
Apr16Cool
May19Cool
Jun22Refreshing
Jul23Refreshing
Aug23Refreshing
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec17Cool

UV index in Chios 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 Chios peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highModerateJun 23UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr8Very high
May7Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep7Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Chios 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 Chios is worst in March — around 15 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodMar 1915 µg/m³Dec 189 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar15Moderate
Apr14Moderate
May13Moderate
Jun12Good
Jul12Moderate
Aug12Moderate
Sep10Good
Oct10Good
Nov11Good
Dec8Good
Location & terrain

Where is Chios?

Chios sits at 38.4°N, 26.1°E, 9 m above sea level, in Greece. The nearest listed city is Çeşme, 15 km away.

UrlaFoçaSeferihisarBalatçıkKüçükçiğliAtaşehirÇiğli

Topography around Chios

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

Within 3 km, the terrain around Chios has significant variations in elevation — a maximum elevation change of 359 m around an average of 41 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 919 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,255 m.

The land around Chios is covered by water (44%) and grassland (20%) within 3 km, water (50%) within 16 km, and water (80%) within 80 km.

3 km
359 m
16 km
919 m
80 km
1,255 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Çeşme 15 km · Urla 55 km · Foça 63 km · Seferihisar 64 km · Balatçık 81 km · Küçükçiğli 81 km · Ataşehir 82 km · Çiğli 83 km

Greece travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 60% of US
price level, 2025
GDP per capita
$26,948
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
8.3
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 592
Religion
other 3%Muslim 2%

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 Chios (38.3687°, 26.1372°, 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. 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).