Cat Ba Weather in August
August in Cat Ba brings very high temperatures, with highs of 31°C (88°F) and nights dropping to 27°C (81°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in Cat Ba in August
Cat Ba is in the rainy season in August, with rain on around 16 days and an average of 415 mm (16 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.
Temperature in Cat Ba in August
Expect highs of 31°C (88°F) in Cat Ba in August, with nights dropping to around 27°C (81°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights remain warm at around 27°C (81°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.
Sunshine in Cat Ba in August
You can expect a moderate amount of sunlight, with approximately 175 hours. Even though this month is part of the wet season, you can still see the sun occasionally.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, November and December typically offer the best weather for Cat Ba.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Vietnam, check out our Cat Ba's climate page.
Cat Ba Temperature in August
Min Temperature
27°C (81°F)
Max Temperature
31°C (88°F)
Chance of Rain
55%
Precipitation
415 mm (16 in)
Rainy days
16 days
Humidity
86% *
Sunshine
175 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cat Ba typically stay consistent throughout August, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Cat Ba in August
Browse day-by-day weather records for Cat Ba spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cat Ba historical weather extremes in August
Based on 39 years of weather observations (1986-2025), these are the most extreme conditions recorded in Cat Ba.
- On August 3, 2025, temperatures climbed to 38°C (100°F), marking the warmest August day on record.
- The coldest August day was on August 23, 1997, with a maximum of 24°C (75°F).
- Nighttime temperatures dropped to 23°C (73°F) on August 27, 2008, marking the coldest August night on record.
Best Places in Vietnam in August
Find out more about the weather in Vietnam and which places have the best travel conditions in this month. See all of Vietnam in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Cat Ba in August
Warm but pleasant conditions in Cat Ba in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Cat Ba in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Vietnam, check out our Cat Ba's climate page.
Temperature Rainfall Sunshine Humidity
See the full Cat Ba climate overview or explore weather in Vietnam.
