Cat Ba island in september: average Weather, Temperature and Climate
Weather in Cat Ba island in september 2025
The weather in Cat Ba island in the month of september comes from statistical datas on the last years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather UV index: 7
Weather at 6am
83°F
Heavy rain
35% of time
30%
21%
12%
Weather at 12pm
86°F
Clear/Sunny
29% of time
27%
26%
16%
Weather at 6pm
83°F
Clear/Sunny
42% of time
21%
17%
16%
Weather at 3am
83°F
38%
25%
22%
13%
Evolution of daily average temperature and precipitation in Cat Ba island in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Cat Ba island in september.
The climate of Cat Ba island in september is tolerable
The weather in september in Cat Ba island is wet (with 16.9in of precipitation over 16 days). The weather is better from the previous month since in august it receives an average of 27.1in of rainfall over 22 days.
The climate quite pleasant in that locality the month of september. The thermometer averaged maximum of 86°F. In the morning the temperature drops to 83°F. Thus, the mean temperature average on this month of september in Cat Ba island is 85°F. Note that seasonal normals in contrast with those observed in Cat Ba island in september with a maximum record of 92°F in 2009 and a minimum record of 72°F in 2011. You You can hope to have about 20 days with temperatures above 86°F, or 67 of the month.
In september in Cat Ba island, the days on average last 12:16. The sun rises at 05:39 and sunset is at 17:55.
With proper weather, this month is okay (but not the best) to go in that area.
Cat Ba island: another month?
If you can push back the dates of your trip, we advise you to go in october to Cat Ba island. more information
September: another location in Vietnam?
If you want to go to Vietnam in september, there are destinations with better weather than Cat Ba island:
In september, Hanoi, Phan Thiet, Bac Ha, Co Thach Beach (Bình Thạnh), Mũi Né and Thanh Pho Ninh Binh have good weather.
Seasonal average climate and temperature of Cat Ba island in september
Check below seasonal norms These datas are compiled from the weather statements of the past years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 83°F | ||||
| Highest record temperature | 92°F (2009) | ||||
| Lowest record temperature | 72°F (2011) | ||||
| Number of days at +86°F | 20 day(s) (67%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 81°F | ||||
| Highest sea temperature | 89°F | ||||
| Wind | |||||
| Wind speed | 17km/h | ||||
| Wind temperature | 83°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 16.9in | ||||
| Number of days with rainfall | 16 day(s) (53%) | ||||
| Record daily rainfall | 5.3in (2013) | ||||
| Other climate data | |||||
| Humidity | 81% | ||||
| Visibility | 8.9km | ||||
| Cloud cover | 36% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:39 | ||||
| Time of sunset | 17:55 | ||||
| Length of day | 12:16 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Cat Ba island in september 2024:
81°F to 88°F
81°F to 88°F
81°F to 90°F
81°F to 90°F
81°F to 94°F
83°F to 95°F
77°F to 83°F
81°F to 83°F
79°F to 81°F
77°F to 79°F
77°F to 79°F
77°F to 86°F
77°F to 88°F
79°F to 86°F
79°F to 86°F
79°F to 88°F
79°F to 88°F
77°F to 88°F
79°F to 83°F
79°F to 86°F
79°F to 86°F
77°F to 83°F
76°F to 83°F
72°F to 74°F
74°F to 81°F
74°F to 83°F
77°F to 85°F
79°F to 85°F
81°F to 86°F
79°F to 85°F
Map: other cities in Vietnam in september
Cities near Cat Ba island:
| Halong Bay in september | tolerable weather |
| Do Son Beach (Vạn Hương) in september | tolerable weather |
| Hải Phòng in september | tolerable weather |
| Lạng Sơn in september | tolerable weather |
| Thanh Pho Ninh Binh in september | good weather |
| Hanoi in september | good weather |
| Thanh Pho Thai Nguyen in september | tolerable weather |
| Thanh Hóa in september | tolerable weather |
| Thanh Pho Hoa Binh in september | tolerable weather |
| Viet Tri in september | tolerable weather |
| Tinh Gia in september | tolerable weather |
| Mai Chau in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Cat Ba island
perfect weather
good
tolerable
bad
very bad
Weather data for Cat Ba island in september:
Weather data for Cat Ba island for september are derived from an average of the weather forecast since 2009 in Cat Ba island. There is a margin of error and these forecasts are to be considered as general information only. The weather in Cat Ba island can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Cat Ba island.