Halong Bay in may: average Weather, Temperature and Climate
Weather in Halong Bay in may 2025
The weather in Halong Bay in the month of may comes from statistical datas on the past years. You can view the weather statistics the entire month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout may
tolerable weather UV index: 7
Weather at 6am
81°F
Heavy rain
24% of time
22%
18%
13%
Weather at 12pm
86°F
Moderate rain at times
29% of time
27%
23%
15%
Weather at 6pm
81°F
Clear/Sunny
34% of time
26%
25%
7%
Weather at 3am
77°F
21%
19%
18%
16%
Evolution of daily average temperature and precipitation in Halong Bay in may
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Halong Bay in may.
The climate of Halong Bay in may is tolerable
In may in Halong Bay, the climate is wet (with 12.2in of rainfall over 14 days). It should be noted a worsening from the previous month since in april there is an average of 4.4in of precipitation over 6 days.
The climate comfortable in that area this month. The high seasonal norm is 86°F. In the morning the temperature drops to 81°F. Thus, the mean temperature average in may in Halong Bay is 83°F. Note that these seasonal averages are in contrast with those observed in Halong Bay in may with a maximum record of 97°F in 2019 and a minimum record of 68°F in 2014. You can plan to have about 19 days with temperatures up to 86°F, or 61 of the month.
Day length in Halong Bay in may is 13:07. The sun rises at 05:15 and sunset is at 18:22.
With a correct weather, the month of may is okay (but not the best) to go there in Vietnam.
May: another location in Vietnam?
If you want to go to Vietnam in may, there are destinations with better weather than Halong Bay:
In may, Nha Trang, Vinh, Phan Thiet, Bac Ha, Bãi Xép Beach (An Chấn) and Co Thach Beach (Bình Thạnh) have good weather.
Seasonal average climate and temperature of Halong Bay in may
Check below seasonal norms These datas are compiled from the weather statements of the last years of the month of may.
| May | |||||
| Outside temperature | |||||
| Average temperature | 83°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 81°F | ||||
| Highest record temperature | 97°F (2019) | ||||
| Lowest record temperature | 68°F (2014) | ||||
| Number of days at +86°F | 19 day(s) (61%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 81°F | ||||
| Lowest sea temperature | 76°F | ||||
| Highest sea temperature | 86°F | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 81°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 12.2in | ||||
| Number of days with rainfall | 14 day(s) (44%) | ||||
| Record daily rainfall | 2.8in (2018) | ||||
| Other climate data | |||||
| Humidity | 86% | ||||
| Visibility | 8.64km | ||||
| Cloud cover | 43% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:15 | ||||
| Time of sunset | 18:22 | ||||
| Length of day | 13:07 | ||||
| Our opinion about the weather in may | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last may?
Here is the day by day recorded weather in Halong Bay in may 2024:
77°F to 85°F
76°F to 77°F
76°F to 81°F
77°F to 81°F
77°F to 83°F
77°F to 85°F
77°F to 85°F
77°F to 85°F
76°F to 81°F
76°F to 81°F
77°F to 85°F
79°F to 85°F
77°F to 81°F
77°F to 83°F
77°F to 83°F
77°F to 81°F
76°F to 83°F
77°F to 83°F
77°F to 83°F
77°F to 83°F
77°F to 83°F
77°F to 85°F
79°F to 85°F
77°F to 85°F
79°F to 85°F
79°F to 81°F
83°F to 85°F
83°F to 86°F
79°F to 86°F
81°F to 83°F
77°F to 85°F
Map: other cities in Vietnam in may
Cities near Halong Bay:
| Cat Ba island in may | tolerable weather |
| Hải Phòng in may | tolerable weather |
| Do Son Beach (Vạn Hương) in may | tolerable weather |
| Lạng Sơn in may | good weather |
| Hanoi in may | tolerable weather |
| Thanh Pho Ninh Binh in may | good weather |
| Thanh Pho Thai Nguyen in may | tolerable weather |
| Viet Tri in may | tolerable weather |
| Thanh Pho Hoa Binh in may | tolerable weather |
| Thanh Hóa in may | good weather |
| Thanh Pho Cao Bang in may | tolerable weather |
| Mai Chau in may | tolerable weather |
Click over cities on the map for information about the weather in may.
Halong Bay
perfect weather
good
tolerable
bad
very bad
Weather data for Halong Bay in may:
Weather data for Halong Bay for may are derived from an average of the weather forecast since 2009 in Halong Bay. There is a margin of error and these forecasts are to be considered as general information only. The weather in Halong Bay 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 Halong Bay.