Mud festival in South Korea
In July, the peaceful seaside town of Boryeong turned into a chaos of mud for 9 days. We recommend putting this festival on your bucket list.
Ansan Weather in October
Ansan in October averages 20°C (68°F) during the day and 12°C (54°F) at night. Some rainfall is typical for this time of year.
Rainfall in Ansan in October
You can expect rain on around 7 days based on historical patterns, with 59 mm (2.3 in) average for the month. The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.
Temperature in Ansan in October
If you're visiting Ansan in October, expect excellent temperatures with highs of 20°C (68°F) and overnight lows of 12°C (54°F). Conditions are often most pleasant around the middle of the day. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Ansan in October
Expect sunny days throughout the month, with an estimated 218 hours of sunshine. This makes it a pleasant time to visit Ansan.If you're inclined towards comfortable temperatures and drier conditions, October is a good time to visit Ansan.
Ansan Temperature in October
Min Temperature
12°C (54°F)
Max Temperature
20°C (68°F)
Chance of Rain
22%
Precipitation
59 mm (2.3 in)
Rainy days
7 days
Humidity
66% *
Sunshine
218 hours *
Percentage Sunshine
*
* Data from: Incheon, South Korea (18 KM, 11 Miles).
Ansan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ansan - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ansan typically drop from around 23°C (73°F) at the start of October to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 5°C (41°F) to 13°C (55°F).
Average temperatures in October
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 October
Historical weather records for Ansan in October
Browse day-by-day weather records for Ansan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ansan historical weather extremes in October
According to our 49 years of weather records for Ansan, the following extremes were recorded between 1976 and 2025.
- On October 1, 1978, temperatures climbed to 29°C (84°F), marking the warmest October day on record.
- The lowest daytime temperature in October was 6°C (43°F), recorded on October 23, 1981.
- Nighttime temperatures dropped to -4°C (25°F) on October 29, 2002, marking the coldest October night on record.
Best Places in South Korea in October
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 October →
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 Ansan in October
Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Ansan in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping8/10 -
Outdoor sports10/10
Ansan 3-Day Forecast
More climate data for Ansan
Temperature Rainfall Sunshine Humidity
See the full Ansan climate overview or explore weather in South Korea.
Popular in October
Where to go in October - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Mud festival in South Korea
10 Hidden gems in Asia you need to visit
Explore 10 hidden gems in Asia offering authentic experiences, from pristine beaches and remote islands to cultural treks and peaceful mountain villages.
Chase the autumn leaves in Japan
Japan is one of these cases which turns into a gold, yellow and orange fairy tale starting from September. And we can honestly say: We cannot imagine a more beautiful season to visit Japan.
The 10 Most Exquisite Beaches in the Philippines
Explore the top 10 breathtaking beaches in the Philippines, from serene Nacpan Beach to volcanic Camiguin Island, in our detailed guide.