May
Other strong months: October and November
75/100 weather score
Japan · 1991–2020
Best time to visit
Kusatsu
For Kusatsu, May has the most comfortable weather in our climate comparison. Typical daytime highs are 25.2°C, nights average 14.1°C, and rainfall totals about 142 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthMay
Typical daytime high25.2°C
Typical night-time low14.1°C
May rainfall142 mm
November
Other strong months: April and October
75/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
1 month fits your choices for Kusatsu
July has the lowest comfort score at 15 out of 100, compared with May at 75. The main reason is that 273 mm of rain falls, and days average 32.1°C, 8° above the 24°C the score treats as ideal.
Quick answers
Planning a trip to Kusatsu?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Kusatsu?
May is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 25.2°C and 142 mm of rain.
What is the hottest month in Kusatsu?
August is hottest in this record, with a typical daytime high of 33.8°C and a night-time low of 24.4°C.
Which month has the least rain?
January has the lowest monthly rainfall total at 58 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 9°C | 0.9°C | 58 mm | 7.7 | 10 h 02 | 18 | Good coverage |
| February | 10.1°C | 0.8°C | 81 mm | 9.8 | 10 h 52 | 16 | Good coverage |
| March | 14.1°C | 3.6°C | 122 mm | 10.4 | 11 h 52 | 28 | Good coverage |
| April | 20°C | 8.5°C | 142 mm | 10.2 | 13 h 01 | 54 | Good coverage |
| May | 25.2°C | 14.1°C | 142 mm | 8.3 | 13 h 59 | 75 | Good coverage |
| June | 28.1°C | 18.8°C | 211 mm | 12 | 14 h 30 | 47 | Good coverage |
| July | 32.1°C | 23.4°C | 273 mm | 14.4 | 14 h 18 | 15 | Good coverage |
| August | 33.8°C | 24.4°C | 157 mm | 8.5 | 13 h 28 | 29 | Good coverage |
| September | 29.3°C | 20.4°C | 224 mm | 11.1 | 12 h 21 | 39 | Good coverage |
| October | 23.4°C | 13.7°C | 158 mm | 9.1 | 11 h 14 | 73 | Good coverage |
| November | 17.3°C | 7.6°C | 80 mm | 6.8 | 10 h 17 | 55 | Good coverage |
| December | 11.6°C | 2.9°C | 68 mm | 7.1 | 9 h 49 | 29 | Good coverage |
What has changed
Recent daytime highs are
1.2°C warmer in Kusatsu.
Each bar shows the difference between the 2011–2025 average daytime high and the 1961–1990 average for the same month at the same station. A blank month does not have enough older observations for a reliable comparison.
Jan
+0.7
Feb
+0.5
Mar
+2.6
Apr
+1.2
May
+1.4
Jun
+1.6
Jul
+1.7
Aug
+1.4
Sep
+1.5
Oct
+1.2
Nov
+0.9
Dec
-0.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.4°C5 Jan 1960 | -8.1°C25 Jan 1963 | 59 mm29 Jan 1959 | 134 mm1973 · driest 0 mm in 2026 | 75 |
| February | 22.8°C11 Feb 1962 | -7.0°C16 Feb 1977 | 66 mm14 Feb 2016 | 183 mm1989 · driest 0 mm in 2026 | 75 |
| March | 25.5°C28 Mar 2018 | -4.8°C4 Mar 1958 | 78 mm30 Mar 1977 | 199 mm1956 · driest 7 mm in 1973 | 75 |
| April | 30.6°C28 Apr 2024 | -2.1°C4 Apr 1957 | 95 mm8 Apr 1974 | 272 mm1973 · driest 0 mm in 2025 | 75 |
| May | 34.2°C25 May 2019 | 2.7°C1 May 1965 | 156 mm28 May 2024 | 415 mm2011 · driest 0 mm in 2025 | 74 |
| June | 37.2°C30 Jun 2022 | 8.5°C3 Jun 1981 | 139 mm20 Jun 1983 | 530 mm1999 · driest 0 mm in 2025 | 74 |
| July | 39.8°C19 Jul 2018 | 13.5°C4 Jul 1966 | 258 mm18 Jul 2015 | 518 mm2020 · driest 0 mm in 2025 | 75 |
| August | 39.8°C8 Aug 1994 | 14.0°C20 Aug 1956 | 289 mm13 Aug 1959 | 488 mm2014 · driest 0 mm in 2025 | 73 |
| September | 38.1°C4 Sep 2010 | 8.2°C30 Sep 1966 | 258 mm28 Sep 1983 | 507 mm1983 · driest 0 mm in 2025 | 73 |
| October | 33.6°C1 Oct 2019 | 3.5°C31 Oct 1983 | 190 mm16 Oct 1998 | 457 mm1998 · driest 0 mm in 2025 | 74 |
| November | 26.9°C19 Nov 2020 | -1.7°C29 Nov 1951 | 87 mm2 Nov 2000 | 191 mm2003 · driest 0 mm in 2025 | 74 |
| December | 22.7°C4 Dec 2018 | -5.2°C31 Dec 1967 | 77 mm5 Dec 2004 | 108 mm2006 · driest 0 mm in 2025 | 74 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 5 | 2 |
| February | 0 | 0 | 6 | 2 |
| March | <1 | 0 | 2 | 4 |
| April | 4 | 0 | 0 | 4 |
| May | 16 | 3 | 0 | 4 |
| June | 23 | 9 | 0 | 5 |
| July | 29 | 22 | 0 | 5 |
| August | 30 | 27 | 0 | 3 |
| September | 25 | 13 | 0 | 4 |
| October | 9 | <1 | 0 | 4 |
| November | <1 | 0 | 0 | 2 |
| December | 0 | 0 | 2 | 2 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 79); on 2011–2025 it is October (83). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 24% | 6% | 20% | 7.6–10.2°C |
| February | <1% | 29% | 9% | 30% | 7.9–11.9°C |
| March | 6% | 34% | 14% | 37% | 12.0–15.3°C |
| April | 37% | 36% | 18% | 44% | 18.3–21.9°C |
| May | 62% | 35% | 17% | 39% | 23.2–26.4°C |
| June | 58% | 43% | 22% | 59% | 26.4–29.1°C |
| July | 59% | 42% | 21% | 49% | 29.6–34.1°C |
| August | 70% | 31% | 14% | 36% | 31.8–35.0°C |
| September | 62% | 38% | 18% | 48% | 26.9–30.9°C |
| October | 60% | 29% | 13% | 28% | 21.6–24.3°C |
| November | 17% | 24% | 9% | 19% | 15.7–18.6°C |
| December | <1% | 22% | 6% | 17% | 9.9–12.9°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 1858067
- NOAA station
- JA000047759 · KYOTO
- Station distance
- 21.3 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 16 usable years
- Daylight
- Calculated from latitude 35.02°, 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.
Next step
Choose your month.
Then plan the details.
The weather comparison for Kusatsu is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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