Đồng Hới
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Đồng Hới Weather in September

Đồng Hới in September sees very high temperatures, with highs around 31°C (88°F) and overnight lows of 26°C (79°F). With the rainy season in full effect, expect around 374 mm (15 in) of rainfall and regular showers throughout the month.

Rainfall in Đồng Hới in September

As part of the rainy season, Đồng Hới sees around 17 days of rain in September, with an average of 374 mm (15 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in Đồng Hới in September

September in Đồng Hới brings very high temperatures, with highs of 31°C (88°F) and nights around 26°C (79°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights are warm at 26°C (79°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Đồng Hới in September

The area experiences a moderate amount of sunshine, with approximately 178 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.

September in Đồng Hới has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

Đồng Hới Temperature in September

Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Chance of Rain
57%
Precipitation
374 mm (15 in)
Rainy days
17 days
Humidity
82%
Sunshine
178 hours
Percentage Sunshine

Đồng Hới Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Đồng Hới - and find the best time to visit.

Daily Historical Temperatures

48-year average (1976-2025)

Based on our historical records, temperatures in Đồng Hới typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows typically ranging from 24°C (75°F) to 26°C (79°F).

Average temperatures in September

Daily Historical Precipitation

48-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

Historical weather records for Đồng Hới in September

Browse day-by-day weather records for Đồng Hới spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Đồng Hới historical weather extremes in September

Based on weather observations in Đồng Hới between 1993 and 2026, these are the recorded extremes during September.

  • The hottest September day on record in Đồng Hới reached 38°C (100°F) (September 7, 2015).
  • The lowest daytime temperature in September was 22°C (72°F), recorded on September 27, 1997.
  • The coldest night in September in Đồng Hới was on September 17, 2022, with a minimum of 18°C (64°F).

Best Places in Vietnam in September

Find out more about the weather in Vietnam and which places have the best travel conditions in this month. See all of Vietnam in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Đồng Hới in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Đồng Hới in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    7/10
  • Cycling
    7/10
  • Walking
    7/10
  • Camping
    7/10
  • Outdoor sports
    7/10

Đồng Hới 3-Day Forecast

More climate data for Đồng Hới

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.