This information may change. Always check the official source.Last verified: August 2026 by Ondřej Kadlec
Best time to visit Japan
In Tokyo: April to June and September to October — the months averaging 18–27 °C by day. No other month of the twelve falls inside that band in Tokyo.
Japan is not one climate. Each reference city below is answered on its own numbers.
Tokyo
Jan8°January: 8 °C by day, 0 °C at night, 62 mm of rain
Feb9°February: 9 °C by day, 0 °C at night, 63 mm of rain
Mar13°March: 13 °C by day, 4 °C at night, 117 mm of rain
Apr18°April: 18 °C by day, 9 °C at night, 123 mm of rain, recommended
May22°May: 22 °C by day, 14 °C at night, 140 mm of rain, recommended
Jun25°June: 25 °C by day, 18 °C at night, 167 mm of rain, recommended
Jul29°July: 29 °C by day, 22 °C at night, 158 mm of rain
Aug30°August: 30 °C by day, 24 °C at night, 115 mm of rain
Sep26°September: 26 °C by day, 20 °C at night, 182 mm of rain, recommended
Oct21°October: 21 °C by day, 14 °C at night, 193 mm of rain, recommended
Nov16°November: 16 °C by day, 8 °C at night, 93 mm of rain
Dec11°December: 11 °C by day, 2 °C at night, 62 mm of rain
Warmest
August, 30 °C
Coolest
January, 8 °C
Driest
January, 62 mm
Wettest
October, 193 mm
Sapporo
June to September — 18–27 °C by day. No other month of the twelve falls inside that band in Sapporo.
Jan-3°January: -3 °C by day, -10 °C at night, 58 mm of rain
Feb-2°February: -2 °C by day, -9 °C at night, 52 mm of rain
Mar2°March: 2 °C by day, -6 °C at night, 68 mm of rain
Apr10°April: 10 °C by day, 0 °C at night, 75 mm of rain
May16°May: 16 °C by day, 7 °C at night, 98 mm of rain
Jun20°June: 20 °C by day, 12 °C at night, 95 mm of rain, recommended
Jul24°July: 24 °C by day, 17 °C at night, 140 mm of rain, recommended
Aug25°August: 25 °C by day, 18 °C at night, 186 mm of rain, recommended
Sep21°September: 21 °C by day, 14 °C at night, 147 mm of rain, recommended
Oct15°October: 15 °C by day, 7 °C at night, 107 mm of rain
Nov7°November: 7 °C by day, 1 °C at night, 96 mm of rain
Dec0°December: 0 °C by day, -6 °C at night, 73 mm of rain
Warmest
August, 25 °C
Coolest
January, -3 °C
Driest
February, 52 mm
Wettest
August, 186 mm
Naha (Okinawa)
November to March — 18–27 °C by day. 8 of the twelve months clear that band in Naha (Okinawa), so this is the driest run of 5 in a row.
Jan19°January: 19 °C by day, 16 °C at night, 96 mm of rain, recommended
Feb19°February: 19 °C by day, 16 °C at night, 97 mm of rain, recommended
Mar21°March: 21 °C by day, 18 °C at night, 128 mm of rain, recommended
Apr23°April: 23 °C by day, 20 °C at night, 147 mm of rain
May25°May: 25 °C by day, 23 °C at night, 232 mm of rain
Jun28°June: 28 °C by day, 25 °C at night, 249 mm of rain
Jul29°July: 29 °C by day, 27 °C at night, 140 mm of rain
Aug29°August: 29 °C by day, 27 °C at night, 194 mm of rain
Sep29°September: 29 °C by day, 26 °C at night, 205 mm of rain
Oct27°October: 27 °C by day, 24 °C at night, 144 mm of rain
Nov24°November: 24 °C by day, 22 °C at night, 113 mm of rain, recommended
Dec20°December: 20 °C by day, 18 °C at night, 120 mm of rain, recommended
Warmest
July, 29 °C
Coolest
January, 19 °C
Driest
January, 96 mm
Wettest
June, 249 mm
How this is worked out: a month qualifies when its mean daytime high falls between 18 °C and 27 °C. Where more than five qualify, the answer is the driest run of consecutive qualifying months; where none do, it is the driest three months in a row if the year is hot throughout, or the warmest three if it never gets there. The figures are the thirty-year monthly averages charted below, and they are averages, not a forecast — any single year can miss them by a wide margin.
Tokyo
Long-term averages for Tokyo: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Tokyo
Month
Day (°C)
Night (°C)
Rain (mm)
January
8
0
62
February
9
0
63
March
13
4
117
April
18
9
123
May
22
14
140
June
25
18
167
July
29
22
158
August
30
24
115
September
26
20
182
October
21
14
193
November
16
8
93
December
11
2
62
Sapporo
Long-term averages for Sapporo: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Sapporo
Month
Day (°C)
Night (°C)
Rain (mm)
January
-3
-10
58
February
-2
-9
52
March
2
-6
68
April
10
0
75
May
16
7
98
June
20
12
95
July
24
17
140
August
25
18
186
September
21
14
147
October
15
7
107
November
7
1
96
December
0
-6
73
Naha (Okinawa)
Long-term averages for Naha (Okinawa): the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
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