Avg High
Busan in December
Avg Low
Rain
Daylight
10h
What to expect
Busan is in early winter during December, with the season well established by this point. It usually feels cool and fresh, and a gentle drop-off once the sun goes down. Conditions tend to feel steady, which makes planning simple. Shorter daylight windows make plan sequencing more important.
December in context
How it compares to the rest of the year in Busan.
Hottest (avg)
#11 / 12
Wettest (avg)
#12 / 12
Daylight Hours
#12 / 12
Windiest (avg)
#3 / 12
Highest UV
#12 / 12
Most Humid
#10 / 12
Monthly climate breakdown
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight hours
- 9.8 h
- UV index (max)
- 3
- Typical sun hours
- 07:24 - 17:14
Rain & Snow
- Total rain
-
- Rainy days
- 4 days
- Cloud cover (avg)
- 36%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 57%
- Wind (avg)
-
- Wind (max gusts)
-
Daily climate explorer
Day 15 selected for December. Typical high 8.5°C and low 1.6°C.
Typical disruptions in December
Based on 30 years of historical data, these are the disruption patterns most likely to affect plans in December.
Cold High impact
Cold feels-like nights Measures: Cold feels-like nights (min <=5C). Observed about 95% of days (29.4 days/month) in December. Historical risk signal only, not a day-by-day forecast.
29.4 days / month
~95% of days
Why this matters
- Expected days 29.4 days / month
- Probability ~95% of days
- Intensity Up to ~3°C (P95)
Cold feels-like nights are possible on ~29 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Cold High impact
Freezing nights Measures: Freezing nights (min <=0C). Observed about 38% of days (11.7 days/month) in December. Historical risk signal only, not a day-by-day forecast.
11.7 days / month
~38% of days
Why this matters
- Expected days 11.7 days / month
- Probability ~38% of days
- Intensity Up to ~-0°C (P95)
Freezing nights are possible on ~12 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cold High impact
Hard freeze nights Measures: Hard freeze nights (min <=-2C). Observed about 20% of days (6.1 days/month) in December. Historical risk signal only, not a day-by-day forecast.
6.1 days / month
~20% of days
Why this matters
- Expected days 6.1 days / month
- Probability ~20% of days
- Intensity Up to ~-2°C (P95)
Hard freeze conditions are possible on ~6 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Wind High impact
Strong gusts Measures: Strong gust days (>=60 km/h). Observed about 11% of days (3.3 days/month) in December. Historical risk signal only, not a day-by-day forecast.
3.3 days / month
~11% of days
Why this matters
- Expected days 3.3 days / month
- Probability ~11% of days
- Intensity Up to ~80km/h (P95)
Strong gusts are possible on ~3 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Rain High impact
Rain disruption Measures: Likely rain disruption days. Observed about 5% of days (1.4 days/month) in December. Historical risk signal only, not a day-by-day forecast.
1.4 days / month
~5% of days
Why this matters
- Expected days 1.4 days / month
- Probability ~5% of days
- Intensity Up to ~32mm (P95)
Rain disruption risk appears on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Washout risk Measures: Washout day risk. Observed about 4% of days (1.4 days/month) in December. Historical risk signal only, not a day-by-day forecast.
1.4 days / month
~4% of days
Why this matters
- Expected days 1.4 days / month
- Probability ~4% of days
- Intensity Up to ~32mm (P95)
Washout conditions are possible on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Show all disruptions (19 more)
Rain High impact
Heavy rain days Measures: Heavy rain days (>=10mm). Observed about 3% of days (0.9 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.9 days / month
~3% of days
Why this matters
- Expected days 0.9 days / month
- Probability ~3% of days
- Intensity Up to ~34mm (P95)
Heavy rain is possible on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind High impact
Stormy conditions Measures: Storm-impact proxy days. Observed about 1% of days (0.5 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.5 days / month
~1% of days
Why this matters
- Expected days 0.5 days / month
- Probability ~1% of days
- Intensity Up to ~89km/h (P95)
Stormy conditions are possible on ~0 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Rain High impact
Very heavy rain Measures: Very heavy rain days (>=25mm). Observed about 1% of days (0.3 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.3 days / month
~1% of days
Why this matters
- Expected days 0.3 days / month
- Probability ~1% of days
- Intensity Up to ~39mm (P95)
Very heavy rain is possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Washout run Measures: Multi-day washout runs. Observed about 0.2 days/month in December. Historical risk signal only, not a day-by-day forecast.
0.2 days / month
Probability unavailable
Why this matters
- Expected days 0.2 days / month
- Probability —
- Intensity Up to ~35mm (P95)
Multi-day washout runs are possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind High impact
Severe gusts Measures: Severe gust days (>=80 km/h). Observed about 1% of days (0.2 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.2 days / month
~1% of days
Why this matters
- Expected days 0.2 days / month
- Probability ~1% of days
- Intensity Up to ~99km/h (P95)
Severe gusts are possible on ~0 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Cold Moderate
Cold snap run Measures: Cold snap runs (>=3 cold days). Observed about 2.3 days/month in December. Historical risk signal only, not a day-by-day forecast.
2.3 days / month
Probability unavailable
Why this matters
- Expected days 2.3 days / month
- Probability —
- Intensity Up to ~10°C (P95)
Cold snap runs are possible on ~2 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Cold Minor
Cold nights Measures: Cold nights (min <=5C). Observed about 80% of days (24.9 days/month) in December. Historical risk signal only, not a day-by-day forecast.
24.9 days / month
~80% of days
Why this matters
- Expected days 24.9 days / month
- Probability ~80% of days
- Intensity Up to ~4°C (P95)
Cold nights are possible on ~25 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Cold Minor
Cold days Measures: Cold days (max <=10C). Observed about 64% of days (19.9 days/month) in December. Historical risk signal only, not a day-by-day forecast.
19.9 days / month
~64% of days
Why this matters
- Expected days 19.9 days / month
- Probability ~64% of days
- Intensity Up to ~10°C (P95)
Cold daytime conditions are possible on ~20 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Wind Minor
Gusty days Measures: Gusty days (>=40 km/h). Observed about 58% of days (18.1 days/month) in December. Historical risk signal only, not a day-by-day forecast.
18.1 days / month
~58% of days
Why this matters
- Expected days 18.1 days / month
- Probability ~58% of days
- Intensity Up to ~69km/h (P95)
Gusty conditions are possible on ~18 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Cloud Minor
Cloudy days Measures: Cloudy days (cloud cover >=60%). Observed about 24% of days (7.5 days/month) in December. Historical risk signal only, not a day-by-day forecast.
7.5 days / month
~24% of days
Why this matters
- Expected days 7.5 days / month
- Probability ~24% of days
- Intensity Up to ~100% (P95)
Cloudy skies are possible on ~8 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Wet days Measures: Wet days (>=0.1mm). Observed about 15% of days (4.6 days/month) in December. Historical risk signal only, not a day-by-day forecast.
4.6 days / month
~15% of days
Why this matters
- Expected days 4.6 days / month
- Probability ~15% of days
- Intensity Up to ~26mm (P95)
Measurable rain is possible on ~5 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cloud Minor
Mostly cloudy days Measures: Mostly cloudy days (cloud cover >=80%). Observed about 12% of days (3.6 days/month) in December. Historical risk signal only, not a day-by-day forecast.
3.6 days / month
~12% of days
Why this matters
- Expected days 3.6 days / month
- Probability ~12% of days
- Intensity Up to ~100% (P95)
Mostly cloudy skies are possible on ~4 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Rainy hours Measures: Rain-hours signal (>=3h rain). Observed about 11% of days (3.5 days/month) in December. Historical risk signal only, not a day-by-day forecast.
3.5 days / month
~11% of days
Why this matters
- Expected days 3.5 days / month
- Probability ~11% of days
- Intensity Up to ~18h (P95)
Several rainy hours are possible on ~4 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain Minor
Wet most of day Measures: Wet-most-of-day signal (>=6h rain). Observed about 7% of days (2.1 days/month) in December. Historical risk signal only, not a day-by-day forecast.
2.1 days / month
~7% of days
Why this matters
- Expected days 2.1 days / month
- Probability ~7% of days
- Intensity Up to ~19h (P95)
Wet-most-of-day conditions are possible on ~2 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Cloud Minor
Overcast days Measures: Overcast days (cloud cover >=95%). Observed about 4% of days (1.4 days/month) in December. Historical risk signal only, not a day-by-day forecast.
1.4 days / month
~4% of days
Why this matters
- Expected days 1.4 days / month
- Probability ~4% of days
- Intensity Up to ~100% (P95)
Overcast skies are possible on ~1 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Humidity Minor
High humidity Measures: High humidity days (RH >=80%). Observed about 4% of days (1.2 days/month) in December. Historical risk signal only, not a day-by-day forecast.
1.2 days / month
~4% of days
Why this matters
- Expected days 1.2 days / month
- Probability ~4% of days
- Intensity Up to ~91% (P95)
High humidity is possible on ~1 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Snow Minor
Snow days Measures: Snow days (>=0.1mm snowfall). Observed about 1% of days (0.4 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.4 days / month
~1% of days
Why this matters
- Expected days 0.4 days / month
- Probability ~1% of days
- Intensity Up to ~7.4mm (P95)
Snowfall is possible on ~0 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Wind Minor
Breezy days Measures: Breezy days (mean wind >=25 km/h). Observed about 1% of days (0.2 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.2 days / month
~1% of days
Why this matters
- Expected days 0.2 days / month
- Probability ~1% of days
- Intensity Up to ~29km/h (P95)
Breezy conditions are possible on ~0 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Cold Minor
Wind chill risk Measures: Wind chill risk days. Observed about 1% of days (0.2 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.2 days / month
~1% of days
Why this matters
- Expected days 0.2 days / month
- Probability ~1% of days
- Intensity Up to ~-9°C (P95)
Wind chill risk is possible on ~0 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Frequently asked questions
Is December a good time to visit Busan?
Typical December days in Busan reach highs of 8°C (46°F) with nights around 2°C (36°F). It usually feels chilly by day and very cold after dark. It is one of the drier months, which suits outdoor exploring and sightseeing.
What are temperatures like in December?
In December, you can usually expect highs of 8°C (46°F) and lows near 2°C (36°F). That means chilly days and very cold nights, so pack layers you can add or remove.
How much does it rain in December?
Rainfall in December averages 27 mm (1.1 in) across roughly 4 days. Overall it is a mostly dry time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in December?
You can expect about 10 hours of daylight in December. Sunrise is typically around 07:24 and sunset near 17:14. Days are on the shorter side, so plan activities around limited daylight.
How strong is the sun in December?
UV levels are moderate (around 3); sunscreen and sunglasses are still a good idea.
Is it windy in December?
In December, average wind speeds are around 13 km/h (8 mph), with gusts on the windiest days reaching about 60 km/h (37 mph). On the ground, it is it is a notably windy place, and strong gusts are fairly common.