July
July · June · August
77climate match
Japan · 1991–2020
Best time to visit
Rebun.
July leads for comfortable weather in Rebun: typically 23.2°C by day, 16.6°C at night, with 110 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJuly
Typical high23.2°C
Typical low16.6°C
Rain in July110 mm
July
July · August · June
49climate match
June
June · May · July
80climate match
The weakest month is January, scoring 5 against July’s 77 — days reach only 0.1°C, 24° below the 24°C the score treats as ideal.
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
50.1° / -5.3°
Feb
50.7° / -4.8°
Mar
54.1° / -2.2°
Apr
2210.5° / 2.2°
May
5016.1° / 7.5°
Jun
6819.4° / 12°
Jul
7723.2° / 16.6°
Aug
6624.7° / 18.1°
Sep
6421.7° / 14.3°
Oct
3015.7° / 7.7°
Nov
58.9° / 1.6°
Dec
52.4° / -2.9°
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 0.1°C | -5.3°C | 130 mm | 23.8 | 6.4°C | 9 h 22 | 5 | Good coverage |
| February | 0.7°C | -4.8°C | 101 mm | 20.3 | 4.2°C | 10 h 29 | 5 | Good coverage |
| March | 4.1°C | -2.2°C | 85 mm | 16.7 | 4.2°C | 11 h 48 | 5 | Strong coverage |
| April | 10.5°C | 2.2°C | 67 mm | 9.6 | 5.8°C | 13 h 19 | 22 | Good coverage |
| May | 16.1°C | 7.5°C | 72 mm | 9.1 | 8.9°C | 14 h 35 | 50 | Good coverage |
| June | 19.4°C | 12°C | 78 mm | 9 | 13.8°C | 15 h 17 | 68 | Good coverage |
| July | 23.2°C | 16.6°C | 110 mm | 10.9 | 18.1°C | 15 h 01 | 77 | Good coverage |
| August | 24.7°C | 18.1°C | 161 mm | 11.9 | 20.9°C | 13 h 54 | 66 | Good coverage |
| September | 21.7°C | 14.3°C | 167 mm | 12.7 | 20.2°C | 12 h 26 | 64 | Good coverage |
| October | 15.7°C | 7.7°C | 163 mm | 16.2 | 16.5°C | 10 h 58 | 30 | Good coverage |
| November | 8.9°C | 1.6°C | 173 mm | 20 | 12.4°C | 9 h 42 | 5 | Good coverage |
| December | 2.4°C | -2.9°C | 150 mm | 23.8 | 9.2°C | 9 h 04 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 8.0°C20 Jan 2010 | -14.9°C14 Jan 1967 | 44 mm31 Jan 1970 | 210 mm2018 · driest 45 mm in 2020 | 75 |
| February | 11.2°C23 Feb 1967 | -14.1°C17 Feb 1978 | 46 mm23 Feb 2004 | 174 mm2004 · driest 22 mm in 1989 | 75 |
| March | 17.5°C28 Mar 2018 | -11.0°C4 Mar 1951 | 74 mm10 Mar 2015 | 215 mm2015 · driest 0 mm in 2026 | 75 |
| April | 27.7°C21 Apr 1998 | -4.9°C1 Apr 1976 | 49 mm13 Apr 1998 | 161 mm1964 · driest 0 mm in 2025 | 75 |
| May | 29.0°C27 May 2019 | -0.9°C3 May 1955 | 116 mm2 May 1998 | 188 mm1955 · driest 0 mm in 2025 | 75 |
| June | 29.2°C28 Jun 2010 | 3.9°C1 Jun 1981 | 101 mm6 Jun 1994 | 149 mm2016 · driest 0 mm in 2025 | 75 |
| July | 32.4°C31 Jul 2000 | 8.1°C6 Jul 1979 | 158 mm25 Jul 1961 | 406 mm1961 · driest 0 mm in 2025 | 75 |
| August | 33.5°C6 Aug 2010 | 10.8°C22 Aug 1956 | 206 mm3 Aug 1962 | 506 mm1962 · driest 0 mm in 2025 | 74 |
| September | 32.2°C5 Sep 1998 | 4.8°C28 Sep 1964 | 157 mm2 Sep 2011 | 376 mm1965 · driest 0 mm in 2025 | 74 |
| October | 25.6°C3 Oct 2025 | -0.5°C31 Oct 1955 | 88 mm15 Oct 1991 | 235 mm2021 · driest 0 mm in 2025 | 74 |
| November | 20.6°C3 Nov 2003 | -8.7°C29 Nov 1971 | 55 mm21 Nov 1972 | 264 mm2012 · driest 0 mm in 2025 | 74 |
| December | 15.1°C1 Dec 1953 | -13.0°C24 Dec 1984 | 33 mm6 Dec 2009 | 255 mm1956 · driest 0 mm in 2025 | 74 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 16 | 3 |
| February | 0 | 0 | 15 | 2 |
| March | 0 | 0 | 14 | 1 |
| April | 0 | 0 | 3 | 2 |
| May | <1 | 0 | 0 | 2 |
| June | 2 | 0 | 0 | 2 |
| July | 7 | <1 | 0 | 3 |
| August | 13 | 1 | 0 | 4 |
| September | 3 | <1 | 0 | 4 |
| October | 0 | 0 | 0 | 5 |
| November | 0 | 0 | 5 | 5 |
| December | 0 | 0 | 13 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 72% | 8% | 90% | -2.0–1.2°C |
| February | 0% | 64% | 6% | 83% | -1.9–1.9°C |
| March | 0% | 46% | 5% | 57% | 2.0–5.4°C |
| April | 1% | 33% | 8% | 37% | 8.2–11.9°C |
| May | 11% | 32% | 8% | 32% | 13.3–17.4°C |
| June | 26% | 30% | 7% | 30% | 16.7–20.2°C |
| July | 55% | 29% | 10% | 31% | 20.0–24.4°C |
| August | 64% | 35% | 14% | 43% | 22.7–26.5°C |
| September | 45% | 41% | 16% | 54% | 20.0–22.8°C |
| October | 4% | 47% | 18% | 64% | 14.0–16.6°C |
| November | 0% | 61% | 17% | 86% | 6.6–9.9°C |
| December | 0% | 72% | 12% | 93% | 0.6–4.3°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 2128423
- NOAA station
- JA000047421 · SUTTSU
- Station distance
- 40.2 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 17 usable years
- Daylight
- Calculated from latitude 42.57°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 22 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.