Monthly weather averages & travel planning

Asia › 🇧🇩 Bangladesh › Dhaka
Updated: March 2026
August is a avoid time to visit Dhaka (3/10). With 8 daily sunshine hours and only 29 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 10th sunniest of the year in Dhaka. August suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 29 potential rain days. September offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 29 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: most accommodation categories have availability, and last-minute deals are common. The quieter streets and shorter queues can make this a genuinely enjoyable time to visit for the right type of traveller. Budget-conscious visitors will find the best value of the year in this period.
Dhaka's August weather is shaped by atmospheric forces that make the data more than just numbers. The 31°C average high reflects the dominance of a stable subtropical air mass, which suppresses cloud formation and concentrates solar energy at the surface. As a result, 8 daily sunshine hours are recorded on average, and rainfall of 271mm is distributed across approximately 29 days because precipitation events tend to be frequent but short-lived.
31°C
88°F
Avg High
26°C
79°F
Avg Low
29 days
271 mm total
Rain Days
8h
per day avg
Sunshine
78%
Humid
Humidity
The narrow 5°C gap between daytime and overnight temperatures, characteristic of coastal cities with maritime moderation, means a single mid-layer works across the whole day. At 78% humidity, the 31°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 16 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 88°F average high, 79°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Dhaka in August means dressing for 31°C days and 26°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 31°C daytime heat. Evening temperatures settle at 26°C, a modest 5°C drop that a light cardigan or denim jacket covers. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre. With 29 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region. At 78% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Loose-weave linen and moisture-wicking fabrics are the practical choice in Dhaka's heat and humidity. Many shopping centres run air conditioning at near-arctic levels, so a thin layer in your bag prevents discomfort indoors.
August has no major festivals or public holidays in Dhaka, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 31°C average highs and 29 rainy days
Dhaka's August heat is driven by the Asian summer monsoon system, as the low-pressure cell that forms over the heated landmass draws warm, humid air from the oceans. The result is temperatures averaging 31°C with high moisture in the air. Overnight temperatures remain elevated at 26°C, as clouds and humidity prevent the earth from radiating heat away after sunset. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Dhaka in August
August ranks 10th sunniest of the year in Dhaka, with an average 8 daily sunshine hours. The driest months are January, December, and November. April is the hottest month (33°C avg high); January is the coolest (24°C). From here, temperatures fall 0°C into September. Compared to last month (July: 31°C high, 29 rain days), August is similarly warm and equally dry. August is one of the least sunny months, but that often means lower prices and fewer fellow tourists.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 24°C | 13°C | 1 | 10h | View |
| February | 27°C | 15°C | 3 | 10h | View |
| March | 32°C | 20°C | 6 | 11h | View |
| April | 33°C | 24°C | 14 | 11h | View |
| May | 32°C | 25°C | 22 | 9h | View |
| June | 31°C | 26°C | 27 | 8h | View |
| July | 31°C | 26°C | 29 | 7h | View |
| August | 31°C | 26°C | 29 | 8h | View |
| September | 31°C | 25°C | 26 | 8h | View |
| October | 30°C | 23°C | 15 | 9h | View |
| November | 28°C | 18°C | 2 | 10h | View |
| December | 25°C | 14°C | 1 | 10h | View |
January
1 rain days, 10h sun
February
3 rain days, 10h sun
March
6 rain days, 11h sun
April
14 rain days, 11h sun
May
22 rain days, 9h sun
June
27 rain days, 8h sun
July
29 rain days, 7h sun
August
29 rain days, 8h sun
September
26 rain days, 8h sun
October
15 rain days, 9h sun
November
2 rain days, 10h sun
December
1 rain days, 10h sun
Data Sources for Dhaka
Climate normals represent 30-year averages (1991-2020). Individual years may vary.