Annual mean 14°C · wettest around January · prevailing wind NW
Warmest
30.3 °C
Coldest
3.6 °C
Wettest
40%
Windiest
4.8 m/s
Prevailing
NW
3.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Nagaoka over the whole year is 14°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 1°C. Nagaoka has no sharply defined rainy season: the chance of rain on a given day runs from 17% in May, the driest month, to 33% in January, the wettest. Winds in Nagaoka are highest in January, averaging 4.0 m/s (14 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the NW. The clearest skies in Nagaoka come in April, when the sky is typically 68% covered; September is the cloudiest month, at 77%.
Month by month Nagaoka 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
4°C
1°C
-1°C
33%
74%
4.0 m/s
0
0
7
February
5°C
1°C
-0°C
25%
73%
3.9 m/s
0
0
11
March
10°C
4°C
5°C
20%
68%
3.4 m/s
5
0
37
April
15°C
9°C
11°C
19%
68%
3.3 m/s
27
1
67
May
20°C
14°C
18°C
17%
68%
2.9 m/s
68
9
72
June
23°C
19°C
23°C
19%
75%
2.7 m/s
70
36
43
July
28°C
23°C
30°C
23%
74%
2.5 m/s
27
51
8
August
29°C
24°C
32°C
19%
71%
2.6 m/s
16
43
5
September
25°C
20°C
26°C
22%
77%
2.6 m/s
53
44
26
October
19°C
14°C
17°C
21%
74%
2.8 m/s
62
10
70
November
13°C
8°C
10°C
23%
69%
3.3 m/s
22
0
63
December
7°C
3°C
2°C
32%
73%
4.0 m/s
1
0
20
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 Nagaoka weather by season
Year round, Nagaoka has days of about 4°C at their warmest in January, its coolest month, and 29°C in August, its warmest; the coolest hours of the day run from 1°C to 24°C through the year, and the average temperature over the year is 14°C around the clock. Rain is most likely around January and least likely around May. 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.
Nagaoka weather in winterDecember to February
High 5°CLow 2°CRain 30%
Winter in Nagaoka has typical daily highs of about 5°C and lows of about 2°C, with a 30% chance of rain on a given day.
Nagaoka weather in springMarch to May
High 15°CLow 9°CRain 19%
Spring in Nagaoka has typical daily highs of about 15°C and lows of about 9°C, with a 19% chance of rain on a given day.
Nagaoka weather in summerJune to August
High 27°CLow 22°CRain 20%
Summer in Nagaoka has typical daily highs of about 27°C and lows of about 22°C, with a 20% chance of rain on a given day.
Nagaoka weather in autumnSeptember to November
High 19°CLow 14°CRain 22%
Autumn in Nagaoka has typical daily highs of about 19°C and lows of about 14°C, with a 22% chance of rain on a given day.
When is the rainy season in Nagaoka?
Nagaoka has no sharply defined rainy season: the chance of rain on a given day runs from 17% in May, the driest month, to 33% in January, the wettest.
What time of year is Nagaoka windiest?
Winds in Nagaoka are highest in January, averaging 4.0 m/s (14 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the NW.
What is the average temperature in Nagaoka year round?
The average temperature in Nagaoka over the whole year is 14°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 1°C.