May
May · April · June
80climate match
Japan · 1991–2020
Best time to visit
Kofu.
May leads for comfortable weather in Kofu: typically 25.4°C by day, 12.9°C at night, with 88 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high25.4°C
Typical low12.9°C
Rain in May88 mm
June
June · September · July
66climate match
April
April · November · May
79climate match
The weakest month is January, scoring 19 against May’s 80 — days reach only 9.2°C, 15° below the 24°C the score treats as ideal, and nights drop to -2.9°C.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
199.2° / -2.9°
Feb
2210.9° / -1.5°
Mar
3715.1° / 2.3°
Apr
6520.8° / 7.8°
May
8025.4° / 12.9°
Jun
6427.9° / 18°
Jul
3831.6° / 22.1°
Aug
3633.1° / 23.1°
Sep
5228.6° / 19.1°
Oct
6222.5° / 12.3°
Nov
5316.8° / 5°
Dec
2811.5° / -0.4°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 9.2°C | -2.9°C | 30 mm | 3.3 | 9 h 59 | 19 | Good coverage |
| February | 10.9°C | -1.5°C | 53 mm | 5.5 | 10 h 50 | 22 | Good coverage |
| March | 15.1°C | 2.3°C | 84 mm | 7.7 | 11 h 51 | 37 | Good coverage |
| April | 20.8°C | 7.8°C | 88 mm | 7.7 | 13 h 02 | 65 | Good coverage |
| May | 25.4°C | 12.9°C | 88 mm | 7.3 | 14 h 02 | 80 | Good coverage |
| June | 27.9°C | 18°C | 114 mm | 10.7 | 14 h 33 | 64 | Good coverage |
| July | 31.6°C | 22.1°C | 150 mm | 12.3 | 14 h 21 | 38 | Good coverage |
| August | 33.1°C | 23.1°C | 128 mm | 9.7 | 13 h 30 | 36 | Good coverage |
| September | 28.6°C | 19.1°C | 170 mm | 10.4 | 12 h 22 | 52 | Good coverage |
| October | 22.5°C | 12.3°C | 199 mm | 8.7 | 11 h 13 | 62 | Good coverage |
| November | 16.8°C | 5°C | 55 mm | 5.5 | 10 h 14 | 53 | Good coverage |
| December | 11.5°C | -0.4°C | 46 mm | 4.2 | 9 h 45 | 28 | Good coverage |
What has changed
Kofu runs +1.7°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+1.2
Feb
+1.5
Mar
+2.5
Apr
+1.6
May
+1.8
Jun
+2.1
Jul
+2.3
Aug
+2.0
Sep
+2.2
Oct
+1.4
Nov
+1.5
Dec
+0.8
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.2°C27 Jan 1969 | -15.0°C27 Jan 1954 | 65 mm15 Jan 1998 | 100 mm1973 · driest 0 mm in 2011 | 75 |
| February | 24.8°C20 Feb 2024 | -10.7°C17 Feb 1968 | 93 mm15 Feb 2014 | 142 mm2014 · driest 0 mm in 2026 | 75 |
| March | 26.5°C31 Mar 1996 | -8.5°C6 Mar 1977 | 84 mm9 Mar 2018 | 187 mm2018 · driest 8 mm in 1973 | 75 |
| April | 33.1°C22 Apr 2004 | -4.1°C2 Apr 1957 | 57 mm5 Apr 2003 | 166 mm2022 · driest 0 mm in 2025 | 75 |
| May | 35.2°C27 May 2019 | 0.7°C3 May 1953 | 90 mm27 May 1965 | 292 mm1965 · driest 0 mm in 2025 | 74 |
| June | 38.3°C30 Jun 2022 | 7.1°C8 Jun 1969 | 182 mm27 Jun 1961 | 386 mm1985 · driest 0 mm in 2025 | 74 |
| July | 40.4°C21 Jul 2004 | 12.6°C3 Jul 1976 | 133 mm25 Jul 2020 | 387 mm2020 · driest 0 mm in 2025 | 75 |
| August | 40.7°C10 Aug 2013 | 13.2°C20 Aug 1956 | 160 mm13 Aug 1959 | 390 mm1983 · driest 0 mm in 2025 | 73 |
| September | 38.0°C3 Sep 1992 | 6.5°C24 Sep 1963 | 224 mm12 Sep 2000 | 430 mm1982 · driest 0 mm in 2025 | 73 |
| October | 33.5°C7 Oct 2018 | 0.3°C19 Oct 1957 | 195 mm6 Oct 2014 | 584 mm2004 · driest 0 mm in 2025 | 74 |
| November | 28.4°C7 Nov 2023 | -5.8°C29 Nov 1951 | 53 mm28 Nov 1991 | 155 mm2003 · driest 0 mm in 1998 | 74 |
| December | 24.9°C5 Dec 2004 | -8.9°C31 Dec 1967 | 64 mm27 Dec 2006 | 109 mm1968 · driest 0 mm in 1973 | 74 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 15 | 1 |
| February | 0 | 0 | 12 | 1 |
| March | <1 | 0 | 5 | 3 |
| April | 5 | <1 | <1 | 2 |
| May | 16 | 3 | 0 | 2 |
| June | 23 | 8 | 0 | 3 |
| July | 28 | 20 | 0 | 4 |
| August | 29 | 25 | 0 | 3 |
| September | 23 | 12 | 0 | 4 |
| October | 7 | <1 | 0 | 3 |
| November | 0 | 0 | 1 | 2 |
| December | 0 | 0 | 10 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 13% | 4% | 8% | 7.4–10.2°C |
| February | <1% | 20% | 6% | 17% | 8.3–12.4°C |
| March | 8% | 28% | 11% | 25% | 12.6–16.4°C |
| April | 43% | 29% | 11% | 28% | 18.6–22.1°C |
| May | 67% | 30% | 11% | 33% | 23.1–26.6°C |
| June | 61% | 39% | 15% | 52% | 25.5–28.6°C |
| July | 62% | 38% | 15% | 43% | 28.4–33.1°C |
| August | 68% | 32% | 13% | 39% | 30.6–34.5°C |
| September | 62% | 37% | 16% | 46% | 25.7–30.0°C |
| October | 55% | 29% | 13% | 29% | 20.4–23.4°C |
| November | 14% | 19% | 7% | 12% | 15.4–18.0°C |
| December | <1% | 13% | 4% | 6% | 9.8–12.5°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 1859100
- NOAA station
- JA000047638 · KOFU
- Station distance
- 1.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 16 usable years
- Daylight
- Calculated from latitude 35.67°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.