Gumi Weather in September
Gumi in September sees high temperatures, with highs around 27°C (81°F) and overnight lows of 17°C (63°F). Rainfall is fairly high at around 156 mm (6.1 in) on average, so pack waterproofs just in case.
Rainfall in Gumi in September
Analyzing past climate data, one can expect approximately 9 days of rain, averaging 156 mm (6.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Gumi in September
Daytime temperatures in Gumi reach 27°C (81°F) in September, dropping to 17°C (63°F) at night. This kind of day-to-night contrast is typical for this time of year. At 17°C (63°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Gumi in September
The month brings about 162 hours of sunlight, offering a comfortable mix of sun and overcast.If you prefer enjoying temperate temperatures and rain-free days, April, May and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Gumi's climate page.
Gumi Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
27°C (81°F)
Chance of Rain
29%
Precipitation
156 mm (6.1 in)
Rainy days
9 days
Humidity
72% *
Sunshine
162 hours *
Percentage Sunshine
44% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Gumi typically drop from around 28°C (82°F) at the start of September to approximately 24°C (75°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 20°C (68°F).
Average temperatures in September
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 September
Historical weather for Gumi in September
Browse day-by-day weather records for Gumi spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Gumi historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Gumi.
- The warmest day in September was on September 1, 1994, with a maximum of 35°C (95°F).
- The coldest September day was on September 30, 2001, with a maximum of 16°C (61°F).
- The lowest overnight temperature recorded in September was 7°C (45°F) (September 27, 2008).
Best Places in South Korea in September
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Gumi in September
Warm but pleasant conditions in Gumi in September. 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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Gumi in September
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 South Korea, check out our Gumi's climate page.
Temperature Rainfall Sunshine Humidity
See the full Gumi climate overview or explore weather in South Korea.
