Best Time-of-Year
The best month at Cat Ba is December, when temperatures average 16–22 °C (61–71 °F) and mid-day humidity sits around 64%. Expect dry, mild days, with around 11 excellent days in a typical December. January and December are the most reliable months, with the least rainfall.
- Terrible
- Poor
- Fair
- Good
- Excellent
- Perfect
Tap a month for its details below.
Month by Month
January
January is among the year's most reliable months — expect mild days, with around 8 excellent days.
February
A typical February brings mild days, with around 4 excellent days.
March
A typical March brings warm days, with around 2 excellent days.
April
A typical April brings warm days, with around 5 climbable days. Heat takes out most of the rest.
May
A typical May brings rainy, hot days, with few climbable days. Rain takes out most of the rest.
June
A typical June brings rainy, hot days, with few climbable days. Rain takes out most of the rest.
July
A typical July brings rainy, hot days, with few climbable days. Rain takes out most of the rest.
August
A typical August brings rainy, hot days, with few climbable days. Rain takes out most of the rest.
September
A typical September brings rainy, hot days, with few climbable days. Rain takes out most of the rest.
October
A typical October brings rainy, warm days, with around 7 climbable days. Heat takes out most of the rest.
November
A typical November brings warm days, with around 3 excellent days. Heat takes out most of the rest.
December
December is the year's best month for climbing — expect dry, mild days, with around 11 excellent days.
A Typical Year
| Month | Excellent Days | Viable Days | Off Days | Temperature | Wet Days | Mid-Day Humidity |
|---|---|---|---|---|---|---|
| January | 8 | 12 | 11 | 15–20 °C 59–68 °F | 7 | 69% |
| February | 4 | 9 | 15 | 16–20 °C 61–69 °F | 8 | 76% |
| March | 2 | 9 | 20 | 19–24 °C 66–74 °F | 8 | 75% |
| April | 0 | 5 | 25 | 23–27 °C 73–81 °F | 8 | 75% |
| May | 0 | 1 | 30 | 25–30 °C 77–85 °F | 18 | 75% |
| June | 0 | 0 | 30 | 27–32 °C 81–89 °F | 24 | 75% |
| July | 0 | 0 | 31 | 27–32 °C 81–89 °F | 21 | 73% |
| August | 0 | 0 | 31 | 27–32 °C 80–89 °F | 28 | 72% |
| September | 0 | 0 | 30 | 26–31 °C 79–88 °F | 23 | 72% |
| October | 0 | 7 | 24 | 23–29 °C 74–84 °F | 12 | 66% |
| November | 3 | 11 | 16 | 21–26 °C 69–79 °F | 7 | 65% |
| December | 11 | 14 | 6 | 16–22 °C 61–71 °F | 3 | 64% |