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Korea Trip Planner

See recently observed weather around your travel dates and confirmed official events.
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START WITH A REAL COMPARISON

How four sample travel weeks felt across Korea

These sample weeks use the same processed observations as the date tool. They help you choose a rough season; enter your own dates above for the exact weekly comparison and official events.

Mid-January sample

January 10–16

average low–high
Seoul-4.0–3.9°CRain ≥0.1 mm: 32% · 1.5 mm/day
Busan1.1–9.7°CRain ≥0.1 mm: 17% · 2.4 mm/day
Jeju North4.9–11.1°CRain ≥0.1 mm: 37% · 2.0 mm/day
Jeju South5.2–12.2°CRain ≥0.1 mm: 27% · 2.2 mm/day

Seoul needs a winter coat and warm layers. Busan and Jeju were milder on average, but their observed samples still included below-freezing days.

Early-April sample

April 5–11

average low–high
Seoul7.8–18.7°CRain ≥0.1 mm: 23% · 2.8 mm/day
Busan10.2–18.5°CRain ≥0.1 mm: 26% · 3.8 mm/day
Jeju North10.9–18.7°CRain ≥0.1 mm: 29% · 1.5 mm/day
Jeju South11.6–18.5°CRain ≥0.1 mm: 40% · 8.8 mm/day

Afternoons were mild, but the average low stayed 8–12°C. Pack a removable outer layer instead of relying on the daytime high alone.

Mid-July sample

July 15–21

average low–high
Seoul24.2–29.9°CRain ≥0.1 mm: 70% · 21.0 mm/day
Busan23.6–28.8°CRain ≥0.1 mm: 60% · 22.6 mm/day
Jeju North25.8–31.6°CRain ≥0.1 mm: 43% · 7.9 mm/day
Jeju South25.5–29.6°CRain ≥0.1 mm: 47% · 7.9 mm/day

All four locations were hot even at night. Seoul and Busan also recorded rain on more than half of comparable days, so heat and rain both belong in the packing plan.

Mid-October sample

October 10–16

average low–high
Seoul13.5–21.6°CRain ≥0.1 mm: 38% · 4.9 mm/day
Busan17.2–24.2°CRain ≥0.1 mm: 34% · 3.7 mm/day
Jeju North19.3–24.8°CRain ≥0.1 mm: 42% · 2.8 mm/day
Jeju South19.8–26.3°CRain ≥0.1 mm: 32% · 2.2 mm/day

Seoul evenings were cooler than the southern cities. A light outer layer makes a multi-city trip easier without requiring separate wardrobes.

How these numbers and event results are checked2023–2025 observations · processed 2026-09-05＋
Weather comparison

Each travel date is matched to a 15-day seasonal window at one Seoul station, one Busan station and separate north and south Jeju stations.

The result includes average low and high, observed range, coverage and clothing guidance. It is not a forecast.
Rain records

A rain day means at least 0.1 mm was recorded. The result shows both the share of rain days and average precipitation.

A past rain-day share is not the probability of rain on your future trip.
Official events

Current schedules come from tourism or organiser sources. Korean listings may be summarised in English while the original title and link remain visible.

No result means no connected official record was found; it does not prove that no local event exists.