Higashi-Matsuyama weather in September
In September, Higashi-Matsuyama sees average daytime highs of 27°C and overnight lows near 21°C, with 186 mm of rain across 14.1 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.
Highs ease over the month, from about 29°C in the first days to 25°C by the end. The sky is clear or mostly clear about 22% of the time in September, and the air most often feels muggy.
Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Higashi-Matsuyama's 10th-clearest and 7th-windiest month. For the whole year in context, see Higashi-Matsuyama's year-round climate.
- Daytime high
- 27°
- 3rd warmest
- Overnight low
- 21°
- 10th coldest
- Rainfall
- 186 mm
- 14.1 wet days
- Daylight
- 12 h 12 min
- 5:30 AM – 5:43 PM
- Cloud cover
- 67%
- 10th clearest
- Wind
- 8 km/h
- 7th windiest
- Solar energy
- 3.54 kWh/m²
- Travel score
- 5.5
- out of 10
Temperature in September
Highs ease over the month, from about 29°C in the first days to 25°C by the end.
A typical September day in Higashi-Matsuyama reaches about 27°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 31°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 24 | 24 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 23 |
| 2 | 30 | 23 |
| 3 | 29 | 23 |
| 4 | 29 | 23 |
| 5 | 29 | 23 |
| 6 | 29 | 22 |
| 7 | 29 | 22 |
| 8 | 29 | 22 |
| 9 | 28 | 22 |
| 10 | 28 | 22 |
| 11 | 28 | 22 |
| 12 | 28 | 21 |
| 13 | 28 | 21 |
| 14 | 27 | 21 |
| 15 | 27 | 21 |
| 16 | 27 | 21 |
| 17 | 27 | 20 |
| 18 | 27 | 20 |
| 19 | 26 | 20 |
| 20 | 26 | 20 |
| 21 | 26 | 19 |
| 22 | 26 | 19 |
| 23 | 26 | 19 |
| 24 | 25 | 19 |
| 25 | 25 | 19 |
| 26 | 25 | 18 |
| 27 | 25 | 18 |
| 28 | 25 | 18 |
| 29 | 24 | 18 |
| 30 | 24 | 18 |
How September really feels in Higashi-Matsuyama
Once humidity and wind are folded in, September averages 2 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Higashi-Matsuyama weather by month
How September compares with the rest of the year at a glance. September is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 9° / 0° | 57 | 6 | 1.8 | 9.8 | 2.1 |
| Feb | 10° / 1° | 53 | 6.4 | 2 | 10.6 | 2.5 |
| Mar | 14° / 4° | 97 | 11.2 | 1 | 11.7 | 3.8 |
| Apr | 19° / 9° | 106 | 10.7 | 0.2 | 12.9 | 5.8 |
| May | 23° / 15° | 127 | 12.2 | 0 | 13.9 | 6.4 |
| Jun | 26° / 19° | 162 | 14.2 | 0 | 14.4 | 5.6 |
| Jul | 30° / 23° | 170 | 14.7 | 0 | 14.2 | 4.4 |
| Aug | 31° / 24° | 128 | 12.3 | 0 | 13.4 | 4.1 |
| Sep | 27° / 21° | 186 | 14.1 | 0 | 12.2 | 5.5 |
| Oct | 21° / 14° | 196 | 12.4 | 0 | 11.1 | 6.2 |
| Nov | 16° / 8° | 76 | 8.6 | 0 | 10.1 | 5.4 |
| Dec | 11° / 3° | 50 | 6.5 | 0.2 | 9.6 | 3.3 |
Cloud cover in September
The sky is clear or mostly clear about 22% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 63%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 38 | 38 | 38 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 37 | 38 | 38 | 37 | 36 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 38 | 38 | 39 |
| Cloudier (%) | 62 | 62 | 62 | 61 | 61 | 62 | 62 | 62 | 62 | 62 | 63 | 62 | 62 | 63 | 64 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 | 63 | 62 | 62 | 61 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 38 | 62 |
| 2 | 38 | 62 |
| 3 | 38 | 62 |
| 4 | 39 | 61 |
| 5 | 39 | 61 |
| 6 | 38 | 62 |
| 7 | 38 | 62 |
| 8 | 38 | 62 |
| 9 | 38 | 62 |
| 10 | 38 | 62 |
| 11 | 37 | 63 |
| 12 | 38 | 62 |
| 13 | 38 | 62 |
| 14 | 37 | 63 |
| 15 | 36 | 64 |
| 16 | 37 | 63 |
| 17 | 37 | 63 |
| 18 | 37 | 63 |
| 19 | 36 | 64 |
| 20 | 36 | 64 |
| 21 | 36 | 64 |
| 22 | 36 | 64 |
| 23 | 36 | 64 |
| 24 | 37 | 63 |
| 25 | 37 | 63 |
| 26 | 37 | 63 |
| 27 | 37 | 63 |
| 28 | 38 | 62 |
| 29 | 38 | 62 |
| 30 | 39 | 61 |
Chance of precipitation in September
Higashi-Matsuyama gets around 186 mm of rain over 14.1 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 47% and peaks near 48% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 47 | 47 | 47 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 47 | 46 | 46 | 46 | 46 | 46 | 45 | 45 |
| Rain chance (%) | |
|---|---|
| 1 | 47 |
| 2 | 47 |
| 3 | 47 |
| 4 | 48 |
| 5 | 48 |
| 6 | 48 |
| 7 | 48 |
| 8 | 48 |
| 9 | 48 |
| 10 | 48 |
| 11 | 48 |
| 12 | 48 |
| 13 | 48 |
| 14 | 48 |
| 15 | 48 |
| 16 | 48 |
| 17 | 48 |
| 18 | 48 |
| 19 | 48 |
| 20 | 47 |
| 21 | 47 |
| 22 | 47 |
| 23 | 47 |
| 24 | 46 |
| 25 | 46 |
| 26 | 46 |
| 27 | 46 |
| 28 | 46 |
| 29 | 45 |
| 30 | 45 |
Humidity in September
Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the muggy band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 4 | 4 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Comfortable (%) | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 5 | 5 | 6 | 7 | 8 | 8 | 9 | 10 | 12 | 13 | 14 | 16 | 17 | 18 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| Humid (%) | 9 | 10 | 10 | 11 | 11 | 12 | 13 | 14 | 16 | 17 | 18 | 20 | 21 | 23 | 24 | 26 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 34 | 35 | 36 | 36 | 36 | 36 | 36 |
| Muggy (%) | 32 | 33 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 33 | 33 | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 21 | 20 | 19 | 18 |
| Oppressive (%) | 48 | 47 | 46 | 46 | 45 | 43 | 42 | 40 | 39 | 37 | 35 | 33 | 32 | 30 | 28 | 25 | 23 | 21 | 19 | 17 | 15 | 13 | 12 | 10 | 9 | 7 | 6 | 5 | 4 | 3 |
| Miserable (%) | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 0 | 1 | 9 | 32 | 48 | 9 |
| 2 | 0 | 1 | 10 | 33 | 47 | 9 |
| 3 | 0 | 2 | 10 | 34 | 46 | 8 |
| 4 | 0 | 2 | 11 | 34 | 46 | 7 |
| 5 | 0 | 2 | 11 | 35 | 45 | 7 |
| 6 | 1 | 3 | 12 | 35 | 43 | 6 |
| 7 | 1 | 3 | 13 | 35 | 42 | 6 |
| 8 | 1 | 4 | 14 | 35 | 40 | 6 |
| 9 | 1 | 5 | 16 | 35 | 39 | 5 |
| 10 | 1 | 5 | 17 | 35 | 37 | 5 |
| 11 | 2 | 6 | 18 | 34 | 35 | 4 |
| 12 | 2 | 7 | 20 | 34 | 33 | 4 |
| 13 | 2 | 8 | 21 | 33 | 32 | 4 |
| 14 | 3 | 8 | 23 | 33 | 30 | 3 |
| 15 | 4 | 9 | 24 | 32 | 28 | 3 |
| 16 | 4 | 10 | 26 | 31 | 25 | 3 |
| 17 | 5 | 12 | 28 | 30 | 23 | 2 |
| 18 | 6 | 13 | 29 | 29 | 21 | 2 |
| 19 | 6 | 14 | 30 | 28 | 19 | 2 |
| 20 | 7 | 16 | 31 | 27 | 17 | 2 |
| 21 | 8 | 17 | 32 | 26 | 15 | 2 |
| 22 | 9 | 18 | 33 | 25 | 13 | 1 |
| 23 | 9 | 20 | 34 | 24 | 12 | 1 |
| 24 | 10 | 21 | 34 | 23 | 10 | 1 |
| 25 | 11 | 22 | 35 | 22 | 9 | 1 |
| 26 | 12 | 23 | 36 | 21 | 7 | 1 |
| 27 | 13 | 24 | 36 | 21 | 6 | 1 |
| 28 | 14 | 25 | 36 | 20 | 5 | 0 |
| 29 | 15 | 26 | 36 | 19 | 4 | 0 |
| 30 | 16 | 27 | 36 | 18 | 3 | 0 |
Wind in September
Winds average 8 km/h in September.
Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
Sunrise & sunset in September
Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 66 minutes over September. Sunrise moves from 5:18 AM to 5:41 AM, and sunset from 6:06 PM to 5:22 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 | 11.7 | 11.7 |
| Sunrise (AM) | 5:18 | 5:19 | 5:20 | 5:20 | 5:21 | 5:22 | 5:23 | 5:24 | 5:24 | 5:25 | 5:26 | 5:27 | 5:28 | 5:28 | 5:29 | 5:30 | 5:31 | 5:32 | 5:32 | 5:33 | 5:34 | 5:35 | 5:36 | 5:36 | 5:37 | 5:38 | 5:39 | 5:40 | 5:40 | 5:41 |
| Sunset (PM) | 6:06 | 6:05 | 6:03 | 6:02 | 6:00 | 5:59 | 5:57 | 5:56 | 5:54 | 5:53 | 5:51 | 5:50 | 5:48 | 5:46 | 5:45 | 5:43 | 5:42 | 5:40 | 5:39 | 5:37 | 5:36 | 5:34 | 5:33 | 5:31 | 5:30 | 5:28 | 5:26 | 5:25 | 5:23 | 5:22 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.8 | 5:18 | 6:06 |
| 2 | 12.8 | 5:19 | 6:05 |
| 3 | 12.7 | 5:20 | 6:03 |
| 4 | 12.7 | 5:20 | 6:02 |
| 5 | 12.7 | 5:21 | 6:00 |
| 6 | 12.6 | 5:22 | 5:59 |
| 7 | 12.6 | 5:23 | 5:57 |
| 8 | 12.5 | 5:24 | 5:56 |
| 9 | 12.5 | 5:24 | 5:54 |
| 10 | 12.5 | 5:25 | 5:53 |
| 11 | 12.4 | 5:26 | 5:51 |
| 12 | 12.4 | 5:27 | 5:50 |
| 13 | 12.3 | 5:28 | 5:48 |
| 14 | 12.3 | 5:28 | 5:46 |
| 15 | 12.3 | 5:29 | 5:45 |
| 16 | 12.2 | 5:30 | 5:43 |
| 17 | 12.2 | 5:31 | 5:42 |
| 18 | 12.1 | 5:32 | 5:40 |
| 19 | 12.1 | 5:32 | 5:39 |
| 20 | 12.1 | 5:33 | 5:37 |
| 21 | 12.0 | 5:34 | 5:36 |
| 22 | 12.0 | 5:35 | 5:34 |
| 23 | 12.0 | 5:36 | 5:33 |
| 24 | 11.9 | 5:36 | 5:31 |
| 25 | 11.9 | 5:37 | 5:30 |
| 26 | 11.8 | 5:38 | 5:28 |
| 27 | 11.8 | 5:39 | 5:26 |
| 28 | 11.8 | 5:40 | 5:25 |
| 29 | 11.7 | 5:40 | 5:23 |
| 30 | 11.7 | 5:41 | 5:22 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 3.54 kWh/m².
For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 5.05 kWh/m² in May across the year — September's 3.54 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.0 | 4.0 | 3.9 | 3.9 | 3.9 | 3.8 | 3.8 | 3.8 | 3.7 | 3.7 | 3.7 | 3.6 | 3.6 | 3.6 | 3.5 | 3.5 | 3.5 | 3.4 | 3.4 | 3.4 | 3.4 | 3.3 | 3.3 | 3.3 | 3.2 | 3.2 | 3.2 | 3.2 | 3.1 | 3.1 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.0 | Moderate |
| 2 | 4.0 | Moderate |
| 3 | 3.9 | Moderate |
| 4 | 3.9 | Moderate |
| 5 | 3.9 | Moderate |
| 6 | 3.8 | Moderate |
| 7 | 3.8 | Moderate |
| 8 | 3.8 | Moderate |
| 9 | 3.7 | Moderate |
| 10 | 3.7 | Moderate |
| 11 | 3.7 | Moderate |
| 12 | 3.6 | Moderate |
| 13 | 3.6 | Moderate |
| 14 | 3.6 | Moderate |
| 15 | 3.5 | Moderate |
| 16 | 3.5 | Moderate |
| 17 | 3.5 | Moderate |
| 18 | 3.4 | Moderate |
| 19 | 3.4 | Moderate |
| 20 | 3.4 | Moderate |
| 21 | 3.4 | Moderate |
| 22 | 3.3 | Moderate |
| 23 | 3.3 | Moderate |
| 24 | 3.3 | Moderate |
| 25 | 3.2 | Moderate |
| 26 | 3.2 | Moderate |
| 27 | 3.2 | Moderate |
| 28 | 3.2 | Moderate |
| 29 | 3.1 | Moderate |
| 30 | 3.1 | Moderate |
Is September a good time to visit Higashi-Matsuyama?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a reasonable time to visit Higashi-Matsuyama for sightseeing.
What to pack for Higashi-Matsuyama in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Higashi-Matsuyama sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. About 14 days see rain.
Sea temperature near Higashi-Matsuyama in September
The nearest coast averages about 25°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 61 km away) is warmest in August at about 26°C and coldest in February near 13°C.
It's comfortable for a long swim from Jun 7 to Nov 3 — about 4.9 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 13 | 13 | 15 | 18 | 21 | 23 | 26 | 25 | 22 | 19 | 16 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Refreshing | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 13 | Bracing |
| Mar | 13 | Bracing |
| Apr | 15 | Cool |
| May | 18 | Cool |
| Jun | 21 | Refreshing |
| Jul | 23 | Refreshing |
| Aug | 26 | Warm |
| Sep | 25 | Warm |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 16 | Cool |
UV index in Higashi-Matsuyama in September
Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Higashi-Matsuyama peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 4 | 6 | 8 | 9 | 10 | 9 | 9 | 6 | 3 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 9 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Higashi-Matsuyama in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Higashi-Matsuyama is worst in April — around 26 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 14 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 21 | 25 | 26 | 24 | 20 | 17 | 16 | 16 | 16 | 16 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 21 | Moderate |
| Mar | 25 | Moderate |
| Apr | 26 | Moderate |
| May | 24 | Moderate |
| Jun | 20 | Moderate |
| Jul | 17 | Moderate |
| Aug | 16 | Moderate |
| Sep | 16 | Moderate |
| Oct | 16 | Moderate |
| Nov | 16 | Moderate |
| Dec | 14 | Moderate |
Where is Higashi-Matsuyama?
Higashi-Matsuyama sits at 36.0°N, 139.4°E, 20 m above sea level, in Japan. The nearest listed city is Ōgushi, 5.0 km away.
Topography around Higashi-Matsuyama
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Higashi-Matsuyama.
Within 3 km, the terrain around Higashi-Matsuyama has only modest variations in elevation — a maximum elevation change of 78 m around an average of 29 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 425 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,569 m.
The land around Higashi-Matsuyama is covered by artificial surfaces (46%), trees (27%) and cropland (22%) within 3 km, artificial surfaces (37%), trees (28%) and cropland (28%) within 16 km, and trees (51%) and artificial surfaces (27%) within 80 km.
Japan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 100 V · 50 / 60 Hz
- Prices
- ≈ 65% of US
- price level, 2025
- GDP per capita
- $35,951
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.2
- per 100k, 2023
- Road deaths
- 3.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very low
- EF EPI 446
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Higashi-Matsuyama (36.0333°, 139.4167°, elevation 20 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).