May
Other strong months: October and April
82/100 weather score
Japan · 1991–2020
Best time to visit
Tōon
For Tōon, May has the most comfortable weather in our climate comparison. Typical daytime highs are 24.1°C, nights average 14.5°C, and rainfall totals about 124 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthMay
Typical daytime high24.1°C
Typical night-time low14.5°C
May rainfall124 mm
September
Other strong months: August and May
70/100 weather score
November
Other strong months: April and May
80/100 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.
3 months fit your choices for Tōon
July has the lowest comfort score at 22 out of 100, compared with May at 82. The main reason is that 259 mm of rain falls, and days average 31.3°C, 7° above the 24°C the score treats as ideal.
Quick answers
Planning a trip to Tōon?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Tōon?
May is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 24.1°C and 124 mm of rain.
What is the hottest month in Tōon?
August is hottest in this record, with a typical daytime high of 32.6°C and a night-time low of 24.4°C.
Which month has the least rain?
January has the lowest monthly rainfall total at 47 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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 10.1°C | 1.8°C | 47 mm | 6.1 | 14.8°C | 10 h 08 | 26 | Good coverage |
| February | 11.1°C | 2.1°C | 72 mm | 8 | 13.2°C | 10 h 55 | 24 | Good coverage |
| March | 14.4°C | 4.9°C | 107 mm | 10 | 13.4°C | 11 h 52 | 34 | Good coverage |
| April | 19.6°C | 9.7°C | 108 mm | 8.6 | 14.8°C | 12 h 59 | 61 | Good coverage |
| May | 24.1°C | 14.5°C | 124 mm | 8.3 | 17.2°C | 13 h 54 | 82 | Good coverage |
| June | 27°C | 19.1°C | 238 mm | 11.9 | 20.5°C | 14 h 23 | 46 | Good coverage |
| July | 31.3°C | 23.5°C | 259 mm | 11.1 | 24.2°C | 14 h 12 | 22 | Good coverage |
| August | 32.6°C | 24.4°C | 108 mm | 7.9 | 26.1°C | 13 h 24 | 40 | Good coverage |
| September | 29°C | 20.6°C | 160 mm | 9 | 25.1°C | 12 h 20 | 51 | Good coverage |
| October | 23.7°C | 14.5°C | 137 mm | 7.6 | 22.9°C | 11 h 17 | 80 | Good coverage |
| November | 18°C | 9°C | 76 mm | 7.2 | 20.2°C | 10 h 22 | 60 | Good coverage |
| December | 12.7°C | 4.2°C | 70 mm | 8.1 | 17.3°C | 9 h 55 | 34 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.3°C1 Jan 1997 | -5.0°C26 Jan 1963 | 63 mm19 Jan 1989 | 157 mm1989 · driest 0 mm in 2026 | 76 |
| February | 24.5°C27 Feb 1954 | -5.3°C16 Feb 1977 | 61 mm14 Feb 2016 | 142 mm1989 · driest 0 mm in 2026 | 76 |
| March | 27.5°C20 Mar 2010 | -3.5°C1 Mar 1984 | 61 mm19 Mar 2015 | 205 mm1966 · driest 0 mm in 2026 | 76 |
| April | 33.9°C28 Apr 1998 | -1.4°C2 Apr 1972 | 129 mm8 Apr 1974 | 304 mm1958 · driest 0 mm in 2025 | 76 |
| May | 33.3°C16 May 1994 | 4.3°C3 May 1957 | 136 mm28 May 2024 | 365 mm1963 · driest 0 mm in 2025 | 76 |
| June | 35.6°C24 Jun 2011 | 10.2°C1 Jun 1978 | 169 mm27 Jun 1979 | 507 mm1953 · driest 0 mm in 2025 | 76 |
| July | 37.0°C22 Jul 1994 | 15.5°C4 Jul 1966 | 245 mm7 Jul 2018 | 554 mm2020 · driest 0 mm in 2025 | 75 |
| August | 37.4°C7 Aug 2018 | 16.4°C20 Aug 1956 | 230 mm31 Aug 1995 | 372 mm2021 · driest 0 mm in 2025 | 75 |
| September | 35.8°C1 Sep 2010 | 9.6°C29 Sep 1965 | 188 mm18 Sep 2017 | 439 mm1976 · driest 0 mm in 2025 | 75 |
| October | 33.3°C3 Oct 2019 | 4.5°C31 Oct 1986 | 151 mm25 Oct 2013 | 370 mm2017 · driest 0 mm in 2025 | 75 |
| November | 28.0°C1 Nov 1977 | 0.2°C17 Nov 1956 | 116 mm2 Nov 2024 | 189 mm2024 · driest 0 mm in 2025 | 75 |
| December | 25.2°C4 Dec 2018 | -3.1°C18 Dec 1985 | 90 mm5 Dec 2004 | 133 mm2015 · driest 0 mm in 2025 | 75 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 4 | 2 |
| February | 0 | 0 | 4 | 2 |
| March | <1 | 0 | <1 | 4 |
| April | 2 | 0 | 0 | 3 |
| May | 13 | <1 | 0 | 4 |
| June | 22 | 3 | 0 | 5 |
| July | 29 | 21 | 0 | 5 |
| August | 30 | 26 | 0 | 2 |
| September | 26 | 12 | 0 | 4 |
| October | 11 | <1 | 0 | 3 |
| November | <1 | 0 | 0 | 3 |
| December | 0 | 0 | <1 | 2 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | <1% | 24% | 6% | 22% | 8.1–11.1°C |
| February | <1% | 28% | 9% | 31% | 8.3–12.7°C |
| March | 3% | 35% | 14% | 41% | 12.4–15.3°C |
| April | 30% | 35% | 16% | 41% | 18.0–20.8°C |
| May | 62% | 33% | 16% | 37% | 22.4–24.8°C |
| June | 58% | 42% | 22% | 59% | 25.4–27.8°C |
| July | 65% | 36% | 18% | 40% | 29.2–32.5°C |
| August | 75% | 26% | 10% | 29% | 30.8–33.3°C |
| September | 66% | 33% | 15% | 38% | 26.4–30.0°C |
| October | 65% | 27% | 11% | 22% | 21.7–24.8°C |
| November | 20% | 25% | 9% | 22% | 16.4–19.2°C |
| December | <1% | 23% | 6% | 20% | 10.4–13.8°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 11611474
- NOAA station
- JA000047887 · MATSUYAMA
- Station distance
- 11.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 17 usable years
- Daylight
- Calculated from latitude 33.79°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 26 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- 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 Tōon 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.
How travel partnerships will work