Annual mean 25°C · wettest around August · prevailing wind E
Warmest
33.1 °C
Coldest
18.9 °C
Wettest
68%
Windiest
2.7 m/s
Prevailing
E
2.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Hanoi over the whole year is 25°C. June is the hottest month, with highs of about 33°C; January is the coldest, with lows of about 16°C. The rainy (wet) season in Hanoi runs from May to October, peaking in August with a 65% chance of rain on a given day. The dry season is November to April; March is the driest month, at 19%. Winds in Hanoi are highest in May, averaging 2.3 m/s (8 km/h), and lightest in September, at 1.7 m/s (6 km/h). The prevailing wind is from the E. The clearest skies in Hanoi come in September, when the sky is typically 60% covered; March is the cloudiest month, at 87%.
Month by month Hanoi climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
20°C
16°C
19°C
26%
81%
1.9 m/s
70
16
63
February
20°C
17°C
20°C
24%
81%
2.1 m/s
67
21
58
March
24°C
20°C
25°C
19%
87%
2.1 m/s
62
40
33
April
27°C
23°C
30°C
32%
81%
2.2 m/s
28
43
10
May
31°C
26°C
35°C
48%
71%
2.3 m/s
7
24
1
June
33°C
28°C
38°C
57%
67%
2.0 m/s
0
8
0
July
33°C
28°C
38°C
59%
66%
2.0 m/s
0
8
0
August
32°C
27°C
37°C
65%
67%
1.9 m/s
1
11
0
September
31°C
26°C
36°C
59%
60%
1.7 m/s
2
19
0
October
28°C
24°C
30°C
51%
61%
2.0 m/s
25
46
8
November
26°C
21°C
27°C
35%
61%
1.8 m/s
45
50
21
December
21°C
16°C
20°C
24%
67%
1.9 m/s
70
18
62
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Hanoi weather by season
Year round, Hanoi has days of about 20°C at their warmest in January, its coolest month, and 33°C in June, its warmest; the coolest hours of the day run from 16°C to 28°C through the year, and the average temperature over the year is 25°C around the clock. Rain is most likely around August and least likely around March. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Hanoi weather in winterDecember to February
High 20°CLow 16°CRain 25%
Winter in Hanoi has typical daily highs of about 20°C and lows of about 16°C, with a 25% chance of rain on a given day.
Hanoi weather in springMarch to May
High 27°CLow 23°CRain 33%
Spring in Hanoi has typical daily highs of about 27°C and lows of about 23°C, with a 33% chance of rain on a given day.
Hanoi weather in summerJune to August
High 32°CLow 28°CRain 60%
Summer in Hanoi has typical daily highs of about 32°C and lows of about 28°C, with a 60% chance of rain on a given day.
Hanoi weather in autumnSeptember to November
High 28°CLow 23°CRain 48%
Autumn in Hanoi has typical daily highs of about 28°C and lows of about 23°C, with a 48% chance of rain on a given day.
When is the rainy season in Hanoi?
The rainy (wet) season in Hanoi runs from May to October, peaking in August with a 65% chance of rain on a given day. The dry season is November to April; March is the driest month, at 19%.
What time of year is Hanoi windiest?
Winds in Hanoi are highest in May, averaging 2.3 m/s (8 km/h), and lightest in September, at 1.7 m/s (6 km/h). The prevailing wind is from the E.
What is the average temperature in Hanoi year round?
The average temperature in Hanoi over the whole year is 25°C. June is the hottest month, with highs of about 33°C; January is the coldest, with lows of about 16°C.