Byblos weather in May

In May, Byblos sees average daytime highs of 22°C and overnight lows near 13°C, with 24 mm of rain across 4.5 wet days and about 13.8 hours of daylight. It is the 6th-warmest and 8th-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 74% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of May to 14 h 06 min by month's end. Set against the rest of the year, May is Byblos's 5th-clearest and 6th-windiest month. For the whole year in context, see Byblos's year-round climate.

Daytime high
22°
6th warmest
Overnight low
13°
7th coldest
Rainfall
24 mm
4.5 wet days
Daylight
13 h 48 min
4:41 AM – 6:27 PM
Cloud cover
26%
5th clearest
Wind
8 km/h
6th windiest
Solar energy
7.34 kWh/m²
Travel score
8.1
out of 10

Byblos is Mediterranean city in the Mount Lebanon Governorate, Lebanon, a main Canaanite-Phoenician city.

Density
4,157/km²
people per km²
Founded
~8000 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 Byblos reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°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 4°C warmer than April and about 4°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12011
22011
32011
42011
52011
62011
72012
82112
92112
102112
112112
122112
132112
142113
152213
162213
172213
182213
192213
202213
212213
222214
232314
242314
252314
262314
272314
282314
292314
302314
312315

Byblos weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 12613.73.6102.5
Feb11° / 121123.410.72.8
Mar14° / 9910.91.411.74.2
Apr18° / 497.10.212.86.3
May22° / 13°244.5013.88.1
Jun25° / 16°30.6014.29.3
Jul28° / 19°00.10148.8
Aug28° / 19°10.3013.38.3
Sep27° / 17°61.6012.28.8
Oct23° / 14°305.8011.18.1
Nov18° / 6980.310.26.2
Dec13° / 10911.41.49.83.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 74% 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 13%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27822
37921
47921
58020
68119
78119
88218
98218
108416
118416
128416
138515
148515
158713
168713
178812
188812
198911
209010
219010
22919
23919
24919
25928
26937
27937
28937
29955
30955
31955

Chance of precipitation in May

Any precipitation

Byblos gets around 24 mm of rain over 4.5 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 14% and peaks near 20% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
118
218
318
419
519
619
719
820
920
1019
1119
1219
1318
1418
1517
1616
1715
1814
1913
2012
2111
2210
239
248
258
267
277
286
296
306
315

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 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39820
49820
59730
69730
79640
89640
99550
109550
119460
129460
139370
149370
159280
169280
179190
189190
1990100
2090100
2189110
2288120
2387130
2486131
2585141
2684151
2783161
2882171
2981181
3080191
3179201

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 18 min at the start of May to 14 h 06 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 4:54 AM to 4:32 AM, and sunset from 6:15 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.34:546:15
213.44:536:16
313.44:526:17
413.44:516:17
513.54:506:18
613.54:496:19
713.54:486:20
813.64:476:21
913.64:466:21
1013.64:456:22
1113.64:456:23
1213.74:446:24
1313.74:436:24
1413.74:426:25
1513.74:416:26
1613.84:416:27
1713.84:406:28
1813.84:396:28
1913.84:386:29
2013.94:386:30
2113.94:376:31
2213.94:376:31
2313.94:366:32
2414.04:356:33
2514.04:356:33
2614.04:346:34
2714.04:346:35
2814.04:336:35
2914.14:336:36
3014.14:336:37
3114.14:326:37

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.34 kWh/m².

For context, solar energy here swings from a low near 2.6 kWh/m² to a high of 8 kWh/m² in June across the year — May's 7.34 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.9Intense
26.9Intense
36.9Intense
47.0Intense
57.0Intense
67.0Intense
77.0Intense
87.1Intense
97.1Intense
107.1Intense
117.2Intense
127.2Intense
137.2Intense
147.3Intense
157.3Intense
167.3Intense
177.4Intense
187.4Intense
197.5Intense
207.5Intense
217.5Intense
227.6Intense
237.6Intense
247.6Intense
257.7Intense
267.7Intense
277.7Intense
287.7Intense
297.8Intense
307.8Intense
317.8Intense
Planning a trip in May

Hazard calendar for Byblos

In seasonPeak

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

Byblos'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 Byblos?

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

8.1
Sightseeing
5th-best month of the year
5.4
Beach & pool
6th-best month of the year

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

What to pack for Byblos in May

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

In May, Byblos sees daytime highs around 22°C and nights near 13°C. Pack sun protection. About 5 days see rain.

sun protection

Sea temperature near Byblos in May

The nearest coast averages about 21°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 28°C and coldest in February near 17°C.

It's comfortable for a long swim from May 3 to Dec 23 — about 7.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb17Cool
Mar17Cool
Apr19Cool
May21Refreshing
Jun25Warm
Jul27Warm
Aug28Tropical
Sep28Warm
Oct26Warm
Nov23Refreshing
Dec21Refreshing

UV index in Byblos in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Byblos peaks around June 21 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 21UV 10Jan 11UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun11Extreme
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Byblos 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 Byblos is worst in November — around 58 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (July, 31 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorPoorModeratePoorUnhealthyNov 2258 µg/m³Jul 2231 µg/m³
PM2.5 (µg/m³)Level
Jan52Poor
Feb57Unhealthy
Mar52Poor
Apr54Poor
May44Poor
Jun35Poor
Jul31Moderate
Aug31Moderate
Sep41Poor
Oct51Poor
Nov58Unhealthy
Dec57Unhealthy
Location & terrain

Where is Byblos?

Byblos sits at 34.1°N, 35.6°E, 33 m above sea level, in Lebanon. The nearest listed city is Jounieh, 16 km away.

JouniehBeirutRa’s BayrūtAleyBsharriChmistârZahleTripoli

Topography around Byblos

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

Within 3 km, the terrain around Byblos has significant variations in elevation — a maximum elevation change of 494 m around an average of 90 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,768 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,068 m.

The land around Byblos is covered by water (41%), trees (29%) and artificial surfaces (21%) within 3 km, water (47%) and trees (37%) within 16 km, and grassland (35%) and water (34%) within 80 km.

3 km
494 m
16 km
1,768 m
80 km
3,068 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Jounieh 16 km · Beirut 29 km · Ra’s Bayrūt 29 km · Aley 35 km · Bsharri 36 km · Chmistâr 38 km · Zahle 38 km · Tripoli 39 km

Lebanon travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type A / B / C / D / G
220 V · 50 Hz
Prices
≈ 38% of US
price level, 2024
GDP per capita
$4,473
2024
Happiness
3.7 / 10
World Happiness, 2025
Safe drinking water
48%
of population, 2024
Homicide rate
2.2
per 100k, 2020
Road deaths
16.4
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 477
Religion
Muslim 68%Christian 32%Druze 5%

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 Byblos (34.1211°, 35.6481°, elevation 33 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).