Climate and monthly weather forecastByblos, Lebanon
Climate and monthly weather forecast
The climate of Byblos
Byblos, a city of great antiquity on the coast of Lebanon, is under the domain of the hot-summer Mediterranean climate according to the Köppen climate classification, categorized as Csa. This geographical position contributes to a temperate and seasonal climate, characterized by hot dry summers and cool, wet winters.Average monthly high temperatures range from a mild 10°C (50°F) in January, gradually increasing to a peak of 29°C (84.2°F) from July to August, before descending back to 11°C (51.8°F) by December. On the flip side, low temperatures range from a chilly 2°C (35.6°F) at the start of the year, gently climbing to an overnight low of 15°C (59°F) from July to August, and then falling back to 4°C (39.2°F) as the year ends.
Precipitation exhibits an inverse relationship with temperature, with the highest rainfall of 162mm (6.38") in January falling to the driest months of July and August, during which virtually no rain falls. The number of days with rainfall echoes this pattern, with a maximum of 15 days in January, dwindling to only one day from June to September.
Sunshine hours see a similar pattern to temperatures, ranging from 5 hours in the shorter winter days to 12 glorious hours in the peak of summer. Sea temperatures range from a chilly 17.5°C (63.5°F) in February to a warm 28.5°C (83.3°F) in August.
The best time to visit Byblos
Arguably, the best time to visit Byblos would be from June to September. During these months, the city experiences its warmest temperatures ranging from 26°C (78.8°F) to 29°C (84.2°F) during the day, and a mild 13°C (55.4°F) to 15°C (59°F) at night. Correspondingly, these months see the least amount of rain, at less than 2mm (0.08") across several months, ensuring dry and pleasant weather for sightseeing. Moreover, these months also offer the maximum sunshine hours, up to 12 hours, and the highest sea temperatures of 25°C (77°F) to 28°C (82.4°F), perfect for beach activities and water sports.The worst time to visit Byblos
Visitors might want to avoid Byblos in the cooler months from November to February. These months experience the lowest high temperatures and the chilliest lows, ranging from 10°C (50°F) down to 2°C (35.6°F). In addition, these months correspond to the highest rainfalls at 85mm (3.35") to 162mm (6.38"). January, for instance, experiences 15 days of rainfall, disrupting outdoor activities.Spring weather in Byblos
Spring in Byblos, from March to May, is marked by rising temperatures and decreasing precipitation. High temperatures ascend from 14°C (57.2°F) in March to 23°C (73.4°F) in May, whereas low temperatures climb from 4°C (39.2°F) to 10°C (50°F) over the same period. Rainfall drops steeply from 103mm (4.06") in March to a mere 15mm (0.59") by May. Hours of sunshine increase from 6 hours in March to 10 hours by May, making it a favored time for nature enthusiasts.Summer weather in Byblos
Summer in Byblos spans June to August and is recognized by high temperatures, minimal precipitation, and abundant sunshine. It is the hottest season with daily high temperatures from 26°C (78.8°F) to 29°C (84.2°F) and lows from 13°C (55.4°F) to 15°C (59°F). With virtually no rainfall and 12 hours of sunshine, these months are excellent for beach outings or exploring historical sites.Autumn weather in Byblos
Autumn in Byblos falls between September to November. Temperatures descend steadily from a high of 27°C (80.6°F) in September to 17°C (62.6°F) in November, with complementary lows decreasing from 14°C (57.2°F) to 7°C (44.6°F). Rainfall sees a drastic increase from September's 2mm (0.08") to November's 85mm (3.35"), signaling the end of the dry season.Winter weather in Byblos
In Byblos, winter stretches from December to February. The weather is cooler with high temperatures ranging from 11°C (51.8°F) to 10°C (50°F) and lows from 4°C (39.2°F) to 2°C (35.6°F). Notably, it is the wettest season with rainfall ranging from 149mm (5.87") in December to 162mm (6.38") in January. However, with 5 hours of sunshine in December and 6 in February, winter serves as a tranquil contrast to the endless summer hustle.Weather in January
Weather conditions in Byblos, Lebanon, start the year with chilly temperatures and heavy precipitation. January is usually bestowed upon with 162mm (6.38") of rainfall, making it the month with the most rainfall in the year. The lower temperatures and rainy conditions make this month less ideal for outdoor activities. Weather in January »Weather in February
Following January, February continues to be rainy but experiences a decrease in the volume of precipitation. Sea temperatures drop to 17.5°C (63.5°F), the lowest point during the year. This change introduces cooler winds from the sea, noticeably affecting the climate. Weather in February »Weather in March
March ushers in the spring in Byblos, Lebanon, with a noticeable increase in temperatures. The number of rainfall days falls substantially, giving way to clearer skies. Outdoor activities start to become more enjoyable due to the increase in sunshine hours. Weather in March »Weather in April
April is characterized as a transition month in Byblos, with declining rainfall down to 50mm (1.97") and temperatures beginning to significantly rise. Daylight hours extend with the advent of spring, reaching 13.1 hours per day. This allows more time for sightseeing and other outdoor activities during the day. Weather in April »Weather in May
May experiences a substantial boost in temperatures with summer firmly setting in Byblos. The rainfall amount drops drastically to a mere 15mm (0.59"), thus reducing the frequency and duration of showers. This reduction in rainfall brings about brighter days and clearer skies, perfect for outdoor engagements. Weather in May »Weather in June
June introduces the summer season in Byblos with higher temperatures and practically no rainfall. The sea temperature increases further, promoting beach and water-related activities. Daylight hours peak, offering tourists extended periods for exploration and enjoyment of the city's offerings. Weather in June »Weather in July
July is the warmest month in Byblos, with temperatures peaking at 29°C (84.2°F). Coupled with these high temperatures, the city sees virtually no rainfall throughout this month. Despite the intense heat, the long sunshine hours make July an ideal month for outdoor and water activities. Weather in July »Weather in August
August in Byblos maintains the heat wave established by July, with the mercury lingering at 29°C (84.2°F). The sea temperature reach their peak at 28.5°C (83.3°F), inviting tourists to indulge in seaside escapades. Despite the heat, nights maintain a cooler, refreshing climate likely to enhance the overall comfort. Weather in August »Weather in September
September marks the beginning of autumn in Byblos with temperatures showing a slight fall. Unlike August, it experiences a small amount of rainfall charting at 2mm (0.08"). This period sees a gradual decrease in sea temperatures, marking the end of beach season. Weather in September »Weather in October
October in Byblos witnesses noticeable changes with a further drop in temperatures and increase in rainfall. Weather conditions become more unpredictable, although outdoor activities remain a feasible option. The sea temperature drops to 26.2°C (79.2°F), still warm enough for late-season swimming. Weather in October »Weather in November
November marks a pronounced change in weather with a significant drop in temperatures, down to a peak of 17°C (62.6°F). Rainfall increases in frequency, adding a damp milieu to the city’s ambiance. The sea temperatures further decrease, discouraging swimming and other water activities. Weather in November »Weather in December
December embraces the onset of winter and marks the end of the year in Byblos. The city experiences a surge in rainfall, the second highest in the year, amounting to 149mm (5.87"). The sea temperature drops to a chilly 20°C (68°F), marking the end of the comfortable sea-bathing period. Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Byblos, Lebanon
The warmest months (with the highest average high temperature) are July and August (29°C).
The month with the lowest average high temperature is January (10°C).
The months with the highest average low temperature are July and August (15°C).
The coldest months (with the lowest average low temperature) are January and February (2°C).
Average rainfall
Byblos, Lebanon
- Average rainfall in January:
162mm - Average rainfall in February:
125mm - Average rainfall in March:
103mm - Average rainfall in April:
50mm - Average rainfall in May:
15mm - Average rainfall in June:
2mm
The wettest month (with the highest rainfall) is January (162mm).
The driest months (with the least rainfall) are July and August (0mm).
Average rainfall days
Byblos, Lebanon
- Average rainfall days in January:
15 days - Average rainfall days in February:
14 days - Average rainfall days in March:
11 days - Average rainfall days in April:
7 days - Average rainfall days in May:
3 days - Average rainfall days in June:
1 days
- Average rainfall days in July:
1 days - Average rainfall days in August:
1 days - Average rainfall days in September:
1 days - Average rainfall days in October:
6 days - Average rainfall days in November:
8 days - Average rainfall days in December:
13 days
The month with the highest number of rainy days is January (15 days).
The months with the least rainy days are June, July, August and September (1 days).
Average sea temperature
Byblos, Lebanon
The best month for swimming (with the highest average sea temperature) is August (28.5°C).
The coldest month (with the lowest average sea temperature) is February (17.5°C).
Average daylight / Average sunshine
Byblos, Lebanon
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 12min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
The months with the most sunshine are June and July (Average sunshine: 12h).
The months with the least sunshine are January, February and December (Average sunshine: 5h).
Average UV index
Byblos, Lebanon
The months with the highest UV index are June and July (UV index 11).
The months with the lowest UV index are January and December (UV index 3).





