May
Other strong months: June and October
73/100 weather score
Japan · 1991–2020
Best time to visit
Gohyakkoku
For Gohyakkoku, May has the most comfortable weather in our climate comparison. Typical daytime highs are 22.9°C, nights average 12.4°C, and rainfall totals about 121 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthMay
Typical daytime high22.9°C
Typical night-time low12.4°C
May rainfall121 mm
June
Other strong months: August and September
48/100 weather score
May
Other strong months: April and October
64/100 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 Gohyakkoku
The lowest comfort score is 5 out of 100. January, February, March and December share that score. In January, that is mainly because days reach only 6.3°C, 18° below the 24°C the score treats as ideal, and 297 mm of rain falls.
Quick answers
Planning a trip to Gohyakkoku?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Gohyakkoku?
May is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 22.9°C and 121 mm of rain.
What is the hottest month in Gohyakkoku?
August is hottest in this record, with a typical daytime high of 31.5°C and a night-time low of 22.9°C.
Which month has the least rain?
May has the lowest monthly rainfall total at 121 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 | 6.3°C | -0.2°C | 297 mm | 24.6 | 12.9°C | 9 h 54 | 5 | Good coverage |
| February | 7.3°C | -0.4°C | 209 mm | 20.7 | 10.7°C | 10 h 47 | 5 | Good coverage |
| March | 11.6°C | 1.9°C | 194 mm | 19.1 | 10.0°C | 11 h 51 | 5 | Good coverage |
| April | 17.6°C | 6.8°C | 143 mm | 12.9 | 11.3°C | 13 h 05 | 40 | Good coverage |
| May | 22.9°C | 12.4°C | 121 mm | 10.1 | 15.2°C | 14 h 06 | 73 | Good coverage |
| June | 25.7°C | 17.3°C | 171 mm | 10.7 | 19.9°C | 14 h 39 | 64 | Good coverage |
| July | 29.9°C | 21.9°C | 286 mm | 15.5 | 23.8°C | 14 h 26 | 22 | Good coverage |
| August | 31.5°C | 22.9°C | 256 mm | 11 | 26.9°C | 13 h 33 | 23 | Good coverage |
| September | 27.1°C | 18.8°C | 250 mm | 13.4 | 25.4°C | 12 h 22 | 44 | Good coverage |
| October | 21.5°C | 12.6°C | 191 mm | 13.3 | 21.9°C | 11 h 11 | 56 | Good coverage |
| November | 15.6°C | 6.9°C | 248 mm | 19 | 18.7°C | 10 h 10 | 14 | Good coverage |
| December | 9.4°C | 2.1°C | 322 mm | 24.9 | 15.6°C | 9 h 40 | 5 | Good coverage |
What has changed
Recent daytime highs are
1.7°C warmer in Gohyakkoku.
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
+1.4
Feb
+1.3
Mar
+2.5
Apr
+1.4
May
+1.9
Jun
+2.3
Jul
+2.4
Aug
+1.9
Sep
+1.7
Oct
+1.5
Nov
+1.5
Dec
+0.1
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.9°C25 Jan 1972 | -9.6°C16 Jan 1977 | 65 mm9 Jan 1956 | 543 mm1963 · driest 113 mm in 1974 | 75 |
| February | 22.5°C25 Feb 2010 | -8.9°C17 Feb 1978 | 57 mm17 Feb 2021 | 338 mm2010 · driest 62 mm in 2003 | 75 |
| March | 27.7°C27 Mar 2025 | -6.0°C4 Mar 1977 | 54 mm17 Mar 2006 | 270 mm2014 · driest 51 mm in 2025 | 75 |
| April | 32.4°C19 Apr 1972 | -2.2°C1 Apr 1987 | 78 mm29 Apr 2021 | 260 mm2003 · driest 0 mm in 2025 | 75 |
| May | 33.3°C30 May 2017 | 2.5°C3 May 1953 | 124 mm28 May 2024 | 273 mm2004 · driest 0 mm in 2025 | 74 |
| June | 37.2°C29 Jun 2022 | 7.7°C1 Jun 1978 | 151 mm25 Jun 1996 | 420 mm1961 · driest 0 mm in 2025 | 74 |
| July | 38.8°C31 Jul 1999 | 13.0°C5 Jul 1966 | 204 mm18 Jul 1964 | 602 mm2017 · driest 0 mm in 2025 | 75 |
| August | 39.5°C22 Aug 2018 | 14.1°C20 Aug 1956 | 124 mm24 Aug 2013 | 489 mm1976 · driest 0 mm in 2025 | 73 |
| September | 38.3°C1 Sep 2002 | 8.9°C30 Sep 1966 | 182 mm1 Sep 2018 | 610 mm2018 · driest 0 mm in 2025 | 73 |
| October | 32.8°C6 Oct 2018 | 1.9°C31 Oct 1983 | 105 mm21 Oct 2004 | 293 mm2004 · driest 0 mm in 2025 | 74 |
| November | 29.2°C1 Nov 1977 | -2.0°C29 Nov 1983 | 73 mm21 Nov 2013 | 402 mm1985 · driest 0 mm in 2025 | 74 |
| December | 24.8°C4 Dec 2018 | -8.5°C31 Dec 1967 | 89 mm26 Dec 1966 | 527 mm2014 · driest 0 mm in 2025 | 74 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 8 | 10 |
| February | 0 | 0 | 10 | 6 |
| March | <1 | 0 | 4 | 6 |
| April | 2 | <1 | 0 | 4 |
| May | 10 | 1 | 0 | 4 |
| June | 16 | 3 | 0 | 5 |
| July | 26 | 15 | 0 | 6 |
| August | 29 | 20 | 0 | 5 |
| September | 20 | 6 | 0 | 5 |
| October | 4 | <1 | 0 | 5 |
| November | <1 | 0 | 0 | 8 |
| December | 0 | 0 | 3 | 10 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 75% | 36% | 96% | 3.9–7.7°C |
| February | <1% | 69% | 24% | 91% | 4.3–8.9°C |
| March | 3% | 55% | 20% | 76% | 9.0–12.8°C |
| April | 19% | 43% | 18% | 59% | 15.7–19.1°C |
| May | 48% | 36% | 15% | 42% | 20.5–24.0°C |
| June | 56% | 42% | 20% | 58% | 23.4–27.0°C |
| July | 56% | 44% | 23% | 53% | 26.9–31.7°C |
| August | 66% | 34% | 18% | 43% | 29.1–33.1°C |
| September | 54% | 46% | 24% | 63% | 24.8–28.6°C |
| October | 36% | 46% | 20% | 63% | 19.4–22.3°C |
| November | 7% | 57% | 28% | 84% | 13.7–16.7°C |
| December | <1% | 72% | 36% | 96% | 7.3–11.2°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 1863598
- NOAA station
- JA000047607 · TOYAMA
- Station distance
- 11.9 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 16 usable years
- Daylight
- Calculated from latitude 36.66°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 24 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 Gohyakkoku 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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