October
Other strong months: May and November
81/100 weather score
Japan · 1991–2020
Best time to visit
Shimonoseki
For Shimonoseki, October has the most comfortable weather in our climate comparison. Typical daytime highs are 23°C, nights average 16.5°C, and rainfall totals about 104 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthOctober
Typical daytime high23°C
Typical night-time low16.5°C
October rainfall104 mm
September
Other strong months: October and August
58/100 weather score
November
Other strong months: April and October
77/100 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 Shimonoseki
July has the lowest comfort score at 9 out of 100, compared with October at 81. The main reason is that 365 mm of rain falls.
Quick answers
Planning a trip to Shimonoseki?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Shimonoseki?
October is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 23°C and 104 mm of rain.
What is the hottest month in Shimonoseki?
August is hottest in this record, with a typical daytime high of 31.3°C and a night-time low of 25.6°C.
Which month has the least rain?
February has the lowest monthly rainfall total at 79 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 | 9.8°C | 4.5°C | 88 mm | 10.1 | 13.2°C | 10 h 07 | 21 | Good coverage |
| February | 10.6°C | 4.6°C | 79 mm | 9.1 | 11.8°C | 10 h 55 | 26 | Good coverage |
| March | 13.7°C | 6.9°C | 117 mm | 10 | 12.1°C | 11 h 52 | 34 | Good coverage |
| April | 18.3°C | 11.3°C | 135 mm | 9.8 | 14.1°C | 12 h 59 | 54 | Good coverage |
| May | 22.8°C | 15.8°C | 143 mm | 8.1 | 17.4°C | 13 h 54 | 75 | Good coverage |
| June | 25.8°C | 19.9°C | 269 mm | 11.7 | 21.3°C | 14 h 24 | 45 | Good coverage |
| July | 29.8°C | 24.2°C | 365 mm | 13.2 | 25.1°C | 14 h 12 | 9 | Good coverage |
| August | 31.3°C | 25.6°C | 191 mm | 9.3 | 27.4°C | 13 h 25 | 29 | Good coverage |
| September | 27.8°C | 22.2°C | 183 mm | 11.1 | 25.9°C | 12 h 21 | 46 | Good coverage |
| October | 23°C | 16.5°C | 104 mm | 6.5 | 22.8°C | 11 h 16 | 81 | Good coverage |
| November | 17.5°C | 11.2°C | 81 mm | 7.8 | 19.4°C | 10 h 21 | 61 | Good coverage |
| December | 12.3°C | 6.8°C | 85 mm | 10.1 | 16.1°C | 9 h 54 | 33 | Good coverage |
What has changed
Recent daytime highs are
1.5°C warmer in Shimonoseki.
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
+1.4
Mar
+2.1
Apr
+1.6
May
+1.7
Jun
+1.4
Jul
+1.5
Aug
+1.2
Sep
+1.3
Oct
+1.6
Nov
+1.2
Dec
+1.3
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.7°C10 Jan 1953 | -6.1°C5 Jan 1970 | 57 mm26 Jan 2002 | 176 mm1972 · driest 0 mm in 2026 | 75 |
| February | 23.7°C22 Feb 2021 | -6.4°C16 Feb 1977 | 61 mm29 Feb 2004 | 204 mm1989 · driest 0 mm in 2026 | 75 |
| March | 27.0°C30 Mar 1979 | -4.7°C5 Mar 1977 | 86 mm10 Mar 2020 | 259 mm1991 · driest 25 mm in 1973 | 75 |
| April | 29.7°C28 Apr 1983 | 0.5°C1 Apr 1972 | 172 mm15 Apr 1955 | 344 mm1955 · driest 0 mm in 2025 | 75 |
| May | 30.9°C25 May 2000 | 7.1°C1 May 1965 | 149 mm11 May 2011 | 386 mm1963 · driest 0 mm in 2025 | 74 |
| June | 35.1°C29 Jun 2022 | 12.0°C1 Jun 1978 | 266 mm28 Jun 1953 | 936 mm1953 · driest 0 mm in 2025 | 74 |
| July | 36.2°C17 Jul 1994 | 15.1°C4 Jul 1966 | 212 mm6 Jul 2018 | 951 mm1980 · driest 0 mm in 2025 | 75 |
| August | 37.0°C10 Aug 1960 | 18.5°C23 Aug 1977 | 189 mm14 Aug 2021 | 720 mm2021 · driest 0 mm in 2025 | 73 |
| September | 35.0°C3 Sep 1983 | 12.9°C28 Sep 1987 | 219 mm14 Sep 1990 | 452 mm2004 · driest 0 mm in 2024 | 73 |
| October | 30.8°C4 Oct 2022 | 7.7°C28 Oct 1958 | 124 mm14 Oct 1951 | 290 mm2017 · driest 0 mm in 2025 | 74 |
| November | 26.9°C8 Nov 2015 | 1.4°C30 Nov 1970 | 137 mm2 Nov 2024 | 251 mm2024 · driest 0 mm in 2025 | 74 |
| December | 26.2°C4 Dec 2018 | -3.5°C27 Dec 1976 | 90 mm5 Dec 2004 | 133 mm2004 · driest 0 mm in 2020 | 74 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | <1 | 2 |
| February | 0 | 0 | <1 | 2 |
| March | <1 | 0 | 0 | 4 |
| April | <1 | 0 | 0 | 4 |
| May | 6 | <1 | 0 | 4 |
| June | 18 | 1 | 0 | 5 |
| July | 27 | 16 | 0 | 6 |
| August | 30 | 22 | 0 | 4 |
| September | 25 | 7 | 0 | 4 |
| October | 7 | 0 | 0 | 2 |
| November | <1 | 0 | 0 | 2 |
| December | 0 | 0 | 0 | 2 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 34% | 9% | 41% | 7.6–10.8°C |
| February | <1% | 35% | 10% | 43% | 7.8–11.9°C |
| March | 1% | 37% | 14% | 46% | 11.5–14.7°C |
| April | 19% | 36% | 18% | 44% | 16.6–19.6°C |
| May | 58% | 33% | 17% | 37% | 20.9–23.5°C |
| June | 61% | 40% | 23% | 53% | 23.9–26.6°C |
| July | 62% | 39% | 22% | 42% | 27.4–31.2°C |
| August | 70% | 31% | 14% | 37% | 29.1–32.4°C |
| September | 65% | 36% | 18% | 44% | 25.6–28.8°C |
| October | 65% | 25% | 10% | 22% | 21.2–23.9°C |
| November | 15% | 29% | 9% | 32% | 15.7–18.8°C |
| December | <1% | 31% | 7% | 34% | 10.0–13.3°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 1852225
- NOAA station
- JA000047762 · SHIMONOSEKI
- Station distance
- 0.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 16 usable years
- Daylight
- Calculated from latitude 33.96°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 20 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 Shimonoseki 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