Our verdict
The best time to visit Sylhet is January-March
In summer, the temperature in Sylhet can rise as high as 37℃ (99℉). The coldest it usually gets in winter-time in Sylhet is around 10℃ (50℉).
The days are longest in Sylhet in April, so if you want to see the sights during the day when the sun is up for the longest time, it’s best to visit around that time of year. The wet season in Sylhet falls around June, so if you prefer the dryer weather, you should look to visit in January instead.
Keep reading to find out more detailed information about the seasons and climate in Sylhet, as well as our favourite tools to help you find the best options for transport, accommodation, and much more.
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Sylhet seasons
Before you continue, it’s important to know when the seasons are in Sylhet as they might be different to yours depending on where in the world you’re travelling from. Sylhet is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Sylhet
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Sylhet for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Sylhet climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Sylhet for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Sylhet in January
- Average temperature: 18℃ (65℉)
- Average high temperature: 26℃ (78℉)
- Average low temperature: 12℃ (54℉)
- Average humidity: 66%
- Average sunny days: 28 days
- Average rainfall: 4mm (0") over 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in January, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Sylhet in February
- Average temperature: 21℃ (70℉)
- Average high temperature: 29℃ (85℉)
- Average low temperature: 14℃ (58℉)
- Average humidity: 57%
- Average sunny days: 25 days
- Average rainfall: 13mm (0") over 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in February, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Sylhet in March
- Average temperature: 25℃ (78℉)
- Average high temperature: 33℃ (92℉)
- Average low temperature: 19℃ (65℉)
- Average humidity: 55%
- Average sunny days: 18 days
- Average rainfall: 49mm (2") over 11 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in March, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Sylhet in April
- Average temperature: 28℃ (83℉)
- Average high temperature: 34℃ (94℉)
- Average low temperature: 23℃ (73℉)
- Average humidity: 67%
- Average sunny days: 6 days
- Average rainfall: 175mm (7") over 21 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in April, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.
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Sylhet in May
- Average temperature: 29℃ (83℉)
- Average high temperature: 33℃ (92℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 79%
- Average sunny days: 2 days
- Average rainfall: 289mm (11") over 27 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in May, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Sylhet in June
- Average temperature: 28℃ (83℉)
- Average high temperature: 32℃ (90℉)
- Average low temperature: 25℃ (78℉)
- Average humidity: 86%
- Average sunny days: 0 days
- Average rainfall: 307mm (12") over 29 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in June, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Sylhet in July
- Average temperature: 28℃ (82℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 89%
- Average sunny days: 1 days
- Average rainfall: 266mm (10") over 29 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in July, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Sylhet in August
- Average temperature: 28℃ (82℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 88%
- Average sunny days: 1 days
- Average rainfall: 292mm (12") over 30 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in August, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Sylhet in September
- Average temperature: 27℃ (81℉)
- Average high temperature: 31℃ (89℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 88%
- Average sunny days: 1 days
- Average rainfall: 236mm (9") over 28 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in September, make sure you pack t-shirts and shorts.. It stays warm all day and night.
Sylhet in October
- Average temperature: 25℃ (78℉)
- Average high temperature: 30℃ (87℉)
- Average low temperature: 21℃ (71℉)
- Average humidity: 84%
- Average sunny days: 10 days
- Average rainfall: 111mm (4") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in October, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.
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Sylhet in November
- Average temperature: 22℃ (71℉)
- Average high temperature: 28℃ (83℉)
- Average low temperature: 17℃ (62℉)
- Average humidity: 79%
- Average sunny days: 23 days
- Average rainfall: 18mm (1") over 5 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in November, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Sylhet in December
- Average temperature: 19℃ (66℉)
- Average high temperature: 26℃ (78℉)
- Average low temperature: 14℃ (57℉)
- Average humidity: 75%
- Average sunny days: 28 days
- Average rainfall: 7mm (0") over 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Sylhet in December, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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