Ha Long (Viet Nam) vs London (Great Britain): Temperature, Rainfall and Sunshine
Ha Long (Viet Nam) has a higher monthly mean temperature than London (Great Britain) in every month of the year.
| Key monthly differences | Ha Long | London |
|---|---|---|
| Warmest months (mean temperature) (°C) | June: 29.06 | July: 18.57 |
| Coolest months (mean temperature) (°C) | January: 16.95 | January: 4.73 |
| Months with the lowest daily rainfall average (mm/day) | December: 0.88 | April: 1.33 |
| Months with the most daily sunshine (hours/day) | May: 9.30 | July: 10.94 |
Climate comparison questions
When are the temperatures most similar and most different?
The smallest difference in monthly mean temperature is 10.14 °C (July); the largest is 14.82 °C (April).
How much do temperatures vary across the year?
The difference between the warmest and coolest monthly means is 12.11 °C in Ha Long (Viet Nam) and 13.84 °C in London (Great Britain). This describes seasonal variation, not the range between daytime highs and nighttime lows.
Which location has more rainfall?
Ha Long (Viet Nam) has a higher daily rainfall average in 8 months and London (Great Britain) in 4; 0 months are equal at the displayed precision. Rainfall amounts do not tell us how many days it rains.
Which location has more sunshine?
Ha Long (Viet Nam) has more average sunshine hours per day in 6 months and London (Great Britain) in 6; 0 months are equal at the displayed precision. Sunshine duration is different from daylight duration.
Data and measurement guide
Daily values are averaged separately for each calendar month over the saved reference period. Temperatures are daily means, not daytime highs. Rainfall is an average daily amount, not a monthly total; sunshine is average hours per day. These historical averages are not a weather forecast. Each location’s reference period is listed below and may differ.
- Ha Long (Viet Nam) — Reference period: 2013–2023
- London (Great Britain) — Reference period: 2013–2023
Monthly climate data
Difference: London (Great Britain) minus Ha Long (Viet Nam)
Temperature °C
| Month | Ha Long | London | +/- |
|---|---|---|---|
| Jan | 16.95 | 4.73 | -12.23 |
| Feb | 17.86 | 5.44 | -12.42 |
| Mar | 21.24 | 6.84 | -14.40 |
| Apr | 24.00 | 9.18 | -14.82 |
| May | 27.30 | 12.67 | -14.64 |
| Jun | 29.06 | 16.27 | -12.79 |
| Jul | 28.71 | 18.57 | -10.14 |
| Aug | 28.28 | 17.74 | -10.55 |
| Sep | 27.53 | 15.48 | -12.04 |
| Oct | 25.11 | 12.31 | -12.80 |
| Nov | 22.46 | 8.09 | -14.37 |
| Dec | 17.67 | 6.52 | -11.16 |
| ⌀ Month | 23.85 | 11.15 | -12.70 |
Average sunshine (hours/day)
| Month | Ha Long | London | +/- |
|---|---|---|---|
| Jan | 5.91 | 3.74 | -2.17 |
| Feb | 5.28 | 5.11 | -0.17 |
| Mar | 5.62 | 6.38 | 0.76 |
| Apr | 7.73 | 9.22 | 1.49 |
| May | 9.30 | 10.11 | 0.81 |
| Jun | 8.68 | 10.51 | 1.83 |
| Jul | 8.55 | 10.94 | 2.39 |
| Aug | 7.78 | 9.68 | 1.90 |
| Sep | 8.41 | 8.02 | -0.39 |
| Oct | 8.53 | 5.86 | -2.67 |
| Nov | 7.63 | 4.12 | -3.52 |
| Dec | 6.26 | 3.14 | -3.11 |
| ⌀ Month | 7.47 | 7.24 | -0.24 |
Average daily rainfall (mm/day)
| Month | Ha Long | London | +/- |
|---|---|---|---|
| Jan | 1.29 | 1.92 | 0.63 |
| Feb | 1.53 | 1.71 | 0.18 |
| Mar | 1.66 | 1.61 | -0.05 |
| Apr | 3.35 | 1.33 | -2.02 |
| May | 5.85 | 1.85 | -4.00 |
| Jun | 8.23 | 1.93 | -6.30 |
| Jul | 10.20 | 1.79 | -8.40 |
| Aug | 13.69 | 2.02 | -11.67 |
| Sep | 8.66 | 1.61 | -7.04 |
| Oct | 3.79 | 2.51 | -1.28 |
| Nov | 1.79 | 2.27 | 0.48 |
| Dec | 0.88 | 2.10 | 1.22 |
| ⌀ Month | 5.08 | 1.89 | -3.19 |
Snow (mm)
| Month | Ha Long | London | +/- |
|---|---|---|---|
| Jan | 0.00 | 0.94 | 0.94 |
| Feb | 0.00 | 0.76 | 0.76 |
| Mar | 0.00 | 0.77 | 0.77 |
| Apr | 0.00 | 0.05 | 0.05 |
| May | 0.00 | 0.00 | 0.00 |
| Jun | 0.00 | 0.00 | 0.00 |
| Jul | 0.00 | 0.00 | 0.00 |
| Aug | 0.00 | 0.00 | 0.00 |
| Sep | 0.00 | 0.00 | 0.00 |
| Oct | 0.00 | 0.00 | 0.00 |
| Nov | 0.00 | 0.04 | 0.04 |
| Dec | 0.00 | 0.40 | 0.40 |
| ⌀ Month | 0.00 | 0.25 | 0.25 |
