Sliven Weather by Month — Temperature & Rainfall Guide

Sliven is a region in Bulgaria. Many people wonder what the weather conditions are in Sliven over the year. What is the best time to visit Sliven?

This page shows the average weather conditions by month in Sliven over the year in: January, February, March, April, May, June, July, August, September, October, November, December.

In January the weather in Sliven is generally poor. January is a winter month. In Zheravna you can expect cold maximum average daytime temperatures around 5°C (41°F) and nighttime temperatures around -3°C (27°F). On average, this month is one of the coldest months of the year in Sliven. So be prepared and make sure to dress up warm.

Find more detailed climate information for Sliven in January here.

In February the weather in Sliven is generally poor. February is a winter month. The average maximum daytime temperatures are low and range from 7°C (45°F) in Kotel to 9°C (48°F) in Nova Zagora.

Find more detailed climate information for Sliven in February here.

In March the weather in Sliven is generally unpleasant. The temperatures range from low in Kotel with 11°C (52°F) to moderate in Nova Zagora with 13°C (55°F).

Find more detailed climate information for Sliven in March here.

In April the weather in Sliven ranges from tolerable in Zheravna to pleasant in Nova Zagora. The temperatures range from moderate in Kotel with 16°C (61°F) to pleasant in Nova Zagora with 18°C (64°F).

Find more detailed climate information for Sliven in April here.

In May the weather in Sliven ranges from pleasant in Zheravna to perfect in Sliven. The temperatures range from pleasant in Kotel with 21°C (70°F) to high in Nova Zagora with 24°C (75°F).

Find more detailed climate information for Sliven in May here.

In June the weather in Sliven is generally perfect. June is a summer month. The average maximum daytime temperatures are high and range from 26°C (79°F) in Kotel to 28°C (82°F) in Nova Zagora.

Find more detailed climate information for Sliven in June here.

In July the weather in Sliven ranges from pleasant in Nova Zagora to perfect in Zheravna. July is a summer month. The temperatures range from high in Kotel with 28°C (82°F) to very high in Nova Zagora with 31°C (88°F).

Find more detailed climate information for Sliven in July here.

In August the weather in Sliven is generally perfect. August is a summer month. The temperatures range from high in Kotel with 28°C (82°F) to very high in Nova Zagora with 31°C (88°F). On average, this month is one of the warmest months of the year in Sliven. So be prepared and make sure to dress lightly.

Find more detailed climate information for Sliven in August here.

In September the weather in Sliven is generally perfect. The average maximum daytime temperatures are high and range from 24°C (75°F) in Kotel to 26°C (79°F) in Nova Zagora.

Find more detailed climate information for Sliven in September here.

In October the weather in Sliven ranges from pleasant in Zheravna to perfect in Nova Zagora. The temperatures range from moderate in Kotel with 18°C (64°F) to pleasant in Nova Zagora with 20°C (68°F).

Find more detailed climate information for Sliven in October here.

In November the weather in Sliven is generally unpleasant. In Zheravna you can expect cold maximum average daytime temperatures around 12°C (54°F) and nighttime temperatures around 3°C (37°F).

Find more detailed climate information for Sliven in November here.

In December the weather in Sliven is generally poor. December is a winter month. In Zheravna you can expect cold maximum average daytime temperatures around 6°C (43°F) and nighttime temperatures around -1°C (30°F).

Find more detailed climate information for Sliven in December here.