Sundarbans weather in August

August in Sundarbans: sweltering, soaked, with muggy air — not the time — 28 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Sundarbans🇧🇩 Bangladesh · Bangladesh & Bengal · National park38
  1. 87Jan
  2. 80Feb
  3. 63Mar
  4. 45Apr
  5. 43May
  6. 36Jun
  7. 41Jul
  8. 38Aug
  9. 50Sep
  10. 58Oct
  11. 74Nov
  12. 83Dec

#11 of 12 months in Sundarbans · #1306 of 1413 destinations to visit in August · comfort 38/100 (tier F)

Days
31°C
Nights
26°C
Wet days
28
Sun
7.4 h
Humidity
87%
Daylight
13 h
Sundarbans, Bangladesh
Photo: Md Amanat Ullah · Pexels

Traveller notes on Sundarbans in August

Notes from nearby Dhaka (132 km away)

Sundarbans doesn't have its own notes for August yet — these are about Dhaka, close enough to share the season.

Forum posters describe August as squarely within Bangladesh's monsoon season, bringing a high likelihood of heavy rainfall, hot and humid conditions, and real flood risk in some rural areas, though posters are consistent that major cities and towns generally remain navigable despite the rain. Posters recommend staying current with forecasts and any travel advisories given the season's genuine unpredictability. Posters note that the rain does bring its own upside outside Dhaka itself - the Sundarban forest closes to multi-day tours for the season, but areas like Rangamati and Bandarban turn a lush, vivid green with especially clear lake water. Posters generally rate August as hot, wet and logistically demanding within Dhaka, workable with flexible planning around the daily rain.
Tripadvisor community · August · 1 month ago · about Dhaka · Read more on Tripadvisor ↗

Other months in Sundarbans

Sundarbans-forum threads and guides on an October visit describe this as the start of the recommended season, posters calling October through March the real window when calmer waters and cooler conditions make tiger spotting considerably more realistic. Regulars call October scenery lush, greenery from the earlier wet season still visible even as the water begins to calm down. Posters recommend later winter months over October specifically for tiger sightings, dense October vegetation cited as a real hindrance compared with the barer landscape of December through February. Regulars call boat-based exploration the only way to see the reserve, no road network reaching most of the core area. Posters recommend booking through an established local operator regardless of season, river routes here considered genuinely variable year to year. The record: 30.4C days feeling like 34C, 24C nights, an extraordinarily high 151.9mm across nearly 15 days and 76 percent humidity.
SundarbansOctoberRegular · October · 1 month ago · Read more on theroamingguide.com ↗
Sundarbans-forum threads on a late June visit describe monsoon conditions as already well underway locally, posters calling river behavior genuinely less predictable once the season sets in. Regulars call this generally not the recommended window, several posters suggesting May or waiting until September instead for calmer conditions. Posters describe one traveler still choosing to go in early June despite the timing, calling the trip workable though acknowledging the onset of storms made it more challenging than an off-season visit. Regulars call tiger sightings considerably less likely this time of year, the best viewing window generally November through February instead. Posters recommend a flexible itinerary and a reliable operator regardless of exact dates, river routes here capable of changing on short notice. The record: 32.2C days feeling like 38C, 26.9C nights, an extraordinarily high 267.4mm across over 24 days and 79 percent humidity.
SundarbansJuneRegular · June · 1 month ago · Read more on Tripadvisor ↗
Sundarbans-forum threads on the winter season describe February as genuinely the most comfortable stretch for a boat-based visit, posters calling daytime conditions pleasantly warm without the humidity that builds later in spring. Regulars call a multi-day boat tour the only real way to see the mangrove forest, day trips from Kolkata generally too rushed to reach tiger-sighting zones like Sajnekhali. Posters recommend tempering expectations on tiger sightings, even experienced crews going full seasons without one, the ecosystem and birdlife the more reliable draw. Regulars call mornings on open water properly cool, a light jacket useful before the day warms up. Posters describe dry grassland patches and calm tidal creeks as ideal for spotting deer and crocodiles. Regulars recommend a registered operator, Forest Department permits required for core-area entry. The record: 28.2C days feeling like 30C, 17.2C nights, a scant 2.4 days of measurable precipitation and 69 percent humidity.
SundarbansFebruaryRegular · February · 1 month ago · Read more on Tripadvisor ↗
Sundarbans-forum threads on rain describe September as the waning phase of the monsoon across Bengal, conditions capable of swinging between a settled stretch and a properly wet one depending on the year. Posters call the mangrove waterways and boat-based wildlife viewing largely unaffected by a passing shower, most of a multi-day cruise continuing regardless of a spell of rain. Regulars are direct spotting a tiger is never guaranteed, posters recommending visitors treat the wider mangrove ecosystem and birdlife as the real draw rather than fixating on one sighting. Posters describe humidity as genuinely high, breathable clothing and real bug protection standing advice regardless of forecast. Regulars call winter the more favored season, September still entirely workable for travelers comfortable with humid, unpredictable conditions. The record: 31.1C days feeling like a punishing 37C, 25.9C nights, an extraordinarily high 236mm across over 25 days and 87 percent humidity.
SundarbansSeptemberRegular · September · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Sundarbans's card on the map.

Sundarbans climate normals — August

Daytime high31°C / 88°F🔥 sweltering
Nighttime low26°C / 79°F
Feels like (high)37°C / 99°F
Rainfall348 mm / 13.7 in⛈ soaked
Rainy days28 days
Humidity87%💦 very humid
Dew point26°C / 78°F
Sunshine7.4 h/day
Daylight12.9 h
Wind15 km/h / 9 mph
Air quality (US AQI)71🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Sundarbans in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietschool holidays in 4 of the markets that fill it, one of its worst months for weather(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Sundarbans's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherSundarbans's weather peaks December–February, best around January.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Sundarbans in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Closure

    Three-month breeding closure

    1 Jun – 31 Aug

    The forest department shuts the Bangladeshi Sundarbans to visitors and to fishing for the breeding season. No launch tours run and no permits are issued, so the delta is left to itself for three months. Source ↗

  • Season

    Wet season

    MonsoonRisk

    28 rainy days and about 348 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in August →

Where is Sundarbans?

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Sundarbans in August — FAQ

Is August a good time to visit Sundarbans?
August in Sundarbans: sweltering, soaked, with muggy air — not the time — 28 rainy days. It ranks #11 of 12 months for Sundarbans on SeasonMap's comfort score (38/100).
What is the weather like in Sundarbans in August?
In August, Sundarbans averages a daily high of 30.9°C and a low of 26.1°C, with about 347.8 mm of rain over roughly 28.1 rainy days.
What is the air quality in Sundarbans in August?
Sundarbans has a mean US Air Quality Index of about 71 in August.