Ha Long Bay
Vietnam · Asia
Year-round range: 58°F to 88°F
December
Excellent conditions this month
Your monthly fit score
Comfort fit by month.
Climate details▼
Temperature
Average highs and lows.
December has comfortable temperatures — not too hot, not too cold.
Shaded band = typical daily swing (P10 of night lows to P90 of afternoon peaks) — spans wider than avg high/low lines because it captures day-to-day variation.
| = DecRainfall
Monthly rain and rain days.
December has moderate rainfall — occasional showers but mostly manageable.
Sunshine
Average hours of bright sun per day.
December has limited sunshine — overcast skies are common.
Clear sky
Clear-sky share is the inverse of average cloud cover (100% minus cloud cover). Band labels follow standard meteorological categories; distribution within each band varies by day.
Air comfort by month
Humidity and heat feel by month.
December is mostly comfortable — low heat and humidity pressure.
Time-of-day patterns
Typical hourly rhythm for December.
Temperature by hour
Temperature by hour and month
Typical temperature through the day across the year (1996-2025 normals, local time). Shaded cells are nighttime.
In December, afternoons reach about 70° and nights settle near 62°.
▶Full month-by-month data
| Month | High °F | Low °F | Rain days | Rain (in) | Sun h/day | Humidity | Sea °F |
|---|---|---|---|---|---|---|---|
| Jan | 67°F | 58°F | 6 | 1.3in | 3.3h | 75.57142857142857% | 70°F |
| Feb | 69°F | 60°F | 6 | 0.9in | 3h | 80.14285714285714% | 70°F |
| Mar | 74°F | 66°F | 10 | 2.1in | 3.2h | 82.14285714285714% | 72°F |
| Apr | 81°F | 72°F | 10 | 2.5in | 4.2h | 82.85714285714285% | 76°F |
| May | 85°F | 77°F | 19 | 7.5in | 4.1h | 83.71428571428571% | 81°F |
| Jun | 88°F | 81°F | 23 | 8.9in | 2.6h | 84.71428571428571% | 84°F |
| Jul | 88°F | 81°F | 24 | 11in | 3.4h | 84.71428571428571% | 85°F |
| Aug | 87°F | 79°F | 26 | 15in | 2.9h | 85.71428571428571% | 85°F |
| Sep | 86°F | 77°F | 21 | 10in | 4h | 83% | 84°F |
| Oct | 82°F | 73°F | 12 | 3.6in | 5.5h | 74.85714285714285% | 82°F |
| Nov | 77°F | 68°F | 8 | 1.9in | 5.4h | 72.71428571428571% | 78°F |
| Dec | 70°F | 60°F | 5 | 1.0in | 4.3h | 69.71428571428571% | 74°F |