Sōma weather in August
In August, Sōma sees average daytime highs of 25°C and overnight lows near 23°C, with 148 mm of rain across 13.2 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.
Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 21% of the time in August, and the air most often feels oppressive.
Daylight stretches from about 14 hours at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Sōma's 9th-clearest and 11th-windiest month. For the whole year in context, see Sōma's year-round climate.
- Daytime high
- 25°
- 1st warmest
- Overnight low
- 23°
- 12th coldest
- Rainfall
- 148 mm
- 13.2 wet days
- Daylight
- 13 h 30 min
- 4:56 AM – 6:24 PM
- Cloud cover
- 68%
- 9th clearest
- Wind
- 12 km/h
- 11th windiest
- Solar energy
- 4.44 kWh/m²
- Travel score
- 6.2
- out of 10
Sōma is city in Fukushima Prefecture, Japan.
- Density
- 176/km²
- people per km²
- Founded
- 1954
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 25°C through the month.
A typical August day in Sōma reaches about 25°C in the afternoon and slips back to 23°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 28°C. Set against its neighbours, August runs about 2°C warmer than July and about 2°C warmer than September.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 23 |
| 2 | 25 | 23 |
| 3 | 25 | 23 |
| 4 | 25 | 23 |
| 5 | 25 | 23 |
| 6 | 25 | 23 |
| 7 | 25 | 23 |
| 8 | 25 | 23 |
| 9 | 25 | 23 |
| 10 | 25 | 23 |
| 11 | 25 | 23 |
| 12 | 25 | 23 |
| 13 | 25 | 23 |
| 14 | 25 | 23 |
| 15 | 25 | 23 |
| 16 | 25 | 23 |
| 17 | 25 | 23 |
| 18 | 25 | 23 |
| 19 | 25 | 23 |
| 20 | 25 | 23 |
| 21 | 25 | 23 |
| 22 | 25 | 23 |
| 23 | 25 | 23 |
| 24 | 25 | 23 |
| 25 | 25 | 23 |
| 26 | 25 | 23 |
| 27 | 25 | 23 |
| 28 | 25 | 23 |
| 29 | 25 | 23 |
| 30 | 25 | 23 |
| 31 | 25 | 22 |
How August really feels in Sōma
Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Sōma weather by month
How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 6° / 3° | 62 | 8.2 | 2.8 | 9.7 | 0.7 |
| Feb | 6° / 3° | 52 | 7.4 | 2.9 | 10.5 | 0.7 |
| Mar | 9° / 4° | 98 | 10.2 | 1.5 | 11.7 | 1.6 |
| Apr | 12° / 8° | 113 | 10.5 | 0.2 | 12.9 | 3.3 |
| May | 16° / 13° | 121 | 11.2 | 0 | 14 | 5.0 |
| Jun | 20° / 17° | 135 | 12.8 | 0 | 14.6 | 5.5 |
| Jul | 23° / 21° | 191 | 16.2 | 0 | 14.3 | 5.6 |
| Aug | 25° / 23° | 148 | 13.2 | 0 | 13.5 | 6.2 |
| Sep | 23° / 21° | 194 | 14.1 | 0 | 12.3 | 6.0 |
| Oct | 19° / 16° | 191 | 11.6 | 0 | 11 | 5.8 |
| Nov | 14° / 10° | 78 | 8.1 | 0 | 10 | 4.3 |
| Dec | 9° / 6° | 58 | 8.7 | 1.2 | 9.4 | 2.0 |
Cloud cover in August
The sky is clear or mostly clear about 21% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 15% of August, 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 36 | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 39 | 39 |
| Cloudier (%) | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 65 | 65 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 64 | 63 | 63 | 63 | 63 | 62 | 62 | 62 | 61 | 61 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 36 | 64 |
| 2 | 36 | 64 |
| 3 | 36 | 64 |
| 4 | 36 | 64 |
| 5 | 36 | 64 |
| 6 | 36 | 64 |
| 7 | 36 | 64 |
| 8 | 35 | 65 |
| 9 | 35 | 65 |
| 10 | 36 | 64 |
| 11 | 36 | 64 |
| 12 | 36 | 64 |
| 13 | 36 | 64 |
| 14 | 36 | 64 |
| 15 | 36 | 64 |
| 16 | 36 | 64 |
| 17 | 36 | 64 |
| 18 | 36 | 64 |
| 19 | 36 | 64 |
| 20 | 36 | 64 |
| 21 | 37 | 63 |
| 22 | 36 | 64 |
| 23 | 37 | 63 |
| 24 | 37 | 63 |
| 25 | 37 | 63 |
| 26 | 37 | 63 |
| 27 | 38 | 62 |
| 28 | 38 | 62 |
| 29 | 38 | 62 |
| 30 | 39 | 61 |
| 31 | 39 | 61 |
Chance of precipitation in August
Sōma gets around 148 mm of rain over 13.2 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 43% and peaks near 47% on the wettest days. The odds climb toward the end of the month.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 39 | 38 | 38 | 38 | 38 | 38 | 39 | 39 | 40 | 41 | 41 | 42 | 43 | 43 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 47 | 47 | 47 |
| Rain chance (%) | |
|---|---|
| 1 | 39 |
| 2 | 38 |
| 3 | 38 |
| 4 | 38 |
| 5 | 38 |
| 6 | 38 |
| 7 | 39 |
| 8 | 39 |
| 9 | 40 |
| 10 | 41 |
| 11 | 41 |
| 12 | 42 |
| 13 | 43 |
| 14 | 43 |
| 15 | 44 |
| 16 | 44 |
| 17 | 44 |
| 18 | 44 |
| 19 | 44 |
| 20 | 45 |
| 21 | 45 |
| 22 | 45 |
| 23 | 45 |
| 24 | 46 |
| 25 | 46 |
| 26 | 46 |
| 27 | 46 |
| 28 | 46 |
| 29 | 47 |
| 30 | 47 |
| 31 | 47 |
Humidity in August
Most of August feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the oppressive band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 89% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Humid (%) | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 11 | 11 | 12 | 13 | 13 |
| Muggy (%) | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 24 | 25 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 32 | 33 | 34 | 35 |
| Oppressive (%) | 58 | 56 | 56 | 55 | 55 | 54 | 54 | 53 | 53 | 54 | 53 | 54 | 53 | 52 | 52 | 52 | 52 | 51 | 50 | 50 | 49 | 48 | 48 | 47 | 47 | 46 | 46 | 45 | 44 | 43 | 43 |
| Miserable (%) | 13 | 14 | 15 | 16 | 16 | 17 | 17 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 11 | 11 | 10 | 9 | 9 | 8 | 7 | 7 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| 1 | 2 | 7 | 20 | 58 | 13 |
| 2 | 2 | 8 | 20 | 56 | 14 |
| 3 | 2 | 8 | 19 | 56 | 15 |
| 4 | 2 | 8 | 19 | 55 | 16 |
| 5 | 2 | 8 | 19 | 55 | 16 |
| 6 | 2 | 8 | 19 | 54 | 17 |
| 7 | 2 | 8 | 19 | 54 | 17 |
| 8 | 2 | 8 | 19 | 53 | 18 |
| 9 | 2 | 8 | 19 | 53 | 18 |
| 10 | 1 | 8 | 19 | 54 | 18 |
| 11 | 1 | 8 | 20 | 53 | 18 |
| 12 | 1 | 8 | 20 | 54 | 17 |
| 13 | 1 | 8 | 21 | 53 | 17 |
| 14 | 2 | 8 | 21 | 52 | 17 |
| 15 | 2 | 8 | 22 | 52 | 16 |
| 16 | 2 | 8 | 22 | 52 | 16 |
| 17 | 2 | 8 | 23 | 52 | 15 |
| 18 | 2 | 8 | 24 | 51 | 15 |
| 19 | 3 | 8 | 25 | 50 | 14 |
| 20 | 3 | 8 | 25 | 50 | 14 |
| 21 | 3 | 8 | 26 | 49 | 13 |
| 22 | 3 | 9 | 27 | 48 | 13 |
| 23 | 3 | 9 | 28 | 48 | 12 |
| 24 | 3 | 9 | 29 | 47 | 11 |
| 25 | 3 | 10 | 30 | 47 | 11 |
| 26 | 3 | 10 | 31 | 46 | 10 |
| 27 | 3 | 11 | 32 | 46 | 9 |
| 28 | 3 | 11 | 32 | 45 | 9 |
| 29 | 3 | 12 | 33 | 44 | 8 |
| 30 | 3 | 13 | 34 | 43 | 7 |
| 31 | 3 | 13 | 35 | 43 | 7 |
Wind in August
Winds average 12 km/h in August.
Across August, daily wind ranges from about 11 km/h on the calmest days to 12 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| 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 | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | light breeze |
| 29 | 12 | light breeze |
| 30 | 12 | light breeze |
| 31 | 12 | light breeze |
Sunrise & sunset in August
Daylight runs from about 14 hours at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 66 minutes over August. Sunrise moves from 4:43 AM to 5:09 AM, and sunset from 6:42 PM to 6:03 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.0 | 13.9 | 13.9 | 13.9 | 13.8 | 13.8 | 13.8 | 13.8 | 13.7 | 13.7 | 13.6 | 13.6 | 13.6 | 13.5 | 13.5 | 13.5 | 13.4 | 13.4 | 13.4 | 13.3 | 13.3 | 13.2 | 13.2 | 13.2 | 13.1 | 13.1 | 13.1 | 13.0 | 13.0 | 12.9 | 12.9 |
| Sunrise (AM) | 4:43 | 4:44 | 4:45 | 4:46 | 4:47 | 4:47 | 4:48 | 4:49 | 4:50 | 4:51 | 4:52 | 4:53 | 4:54 | 4:54 | 4:55 | 4:56 | 4:57 | 4:58 | 4:59 | 5:00 | 5:01 | 5:02 | 5:02 | 5:03 | 5:04 | 5:05 | 5:06 | 5:07 | 5:08 | 5:09 | 5:09 |
| Sunset (PM) | 6:42 | 6:41 | 6:40 | 6:39 | 6:37 | 6:36 | 6:35 | 6:34 | 6:33 | 6:32 | 6:31 | 6:30 | 6:28 | 6:27 | 6:26 | 6:24 | 6:23 | 6:22 | 6:21 | 6:19 | 6:18 | 6:16 | 6:15 | 6:14 | 6:12 | 6:11 | 6:09 | 6:08 | 6:06 | 6:05 | 6:03 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.0 | 4:43 | 6:42 |
| 2 | 13.9 | 4:44 | 6:41 |
| 3 | 13.9 | 4:45 | 6:40 |
| 4 | 13.9 | 4:46 | 6:39 |
| 5 | 13.8 | 4:47 | 6:37 |
| 6 | 13.8 | 4:47 | 6:36 |
| 7 | 13.8 | 4:48 | 6:35 |
| 8 | 13.8 | 4:49 | 6:34 |
| 9 | 13.7 | 4:50 | 6:33 |
| 10 | 13.7 | 4:51 | 6:32 |
| 11 | 13.6 | 4:52 | 6:31 |
| 12 | 13.6 | 4:53 | 6:30 |
| 13 | 13.6 | 4:54 | 6:28 |
| 14 | 13.5 | 4:54 | 6:27 |
| 15 | 13.5 | 4:55 | 6:26 |
| 16 | 13.5 | 4:56 | 6:24 |
| 17 | 13.4 | 4:57 | 6:23 |
| 18 | 13.4 | 4:58 | 6:22 |
| 19 | 13.4 | 4:59 | 6:21 |
| 20 | 13.3 | 5:00 | 6:19 |
| 21 | 13.3 | 5:01 | 6:18 |
| 22 | 13.2 | 5:02 | 6:16 |
| 23 | 13.2 | 5:02 | 6:15 |
| 24 | 13.2 | 5:03 | 6:14 |
| 25 | 13.1 | 5:04 | 6:12 |
| 26 | 13.1 | 5:05 | 6:11 |
| 27 | 13.1 | 5:06 | 6:09 |
| 28 | 13.0 | 5:07 | 6:08 |
| 29 | 13.0 | 5:08 | 6:06 |
| 30 | 12.9 | 5:09 | 6:05 |
| 31 | 12.9 | 5:09 | 6:03 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 4.44 kWh/m².
For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 5.4 kWh/m² in May across the year — August's 4.44 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 | 4.3 | 4.2 | 4.2 | 4.2 | 4.2 | 4.1 | 4.1 | 4.1 | 4.0 | 4.0 | 4.0 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.8 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.7 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.7 | Bright |
| 10 | 4.6 | Bright |
| 11 | 4.6 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.5 | Bright |
| 14 | 4.5 | Bright |
| 15 | 4.5 | Bright |
| 16 | 4.4 | Bright |
| 17 | 4.4 | Bright |
| 18 | 4.3 | Bright |
| 19 | 4.3 | Bright |
| 20 | 4.3 | Bright |
| 21 | 4.3 | Bright |
| 22 | 4.2 | Bright |
| 23 | 4.2 | Bright |
| 24 | 4.2 | Bright |
| 25 | 4.2 | Bright |
| 26 | 4.1 | Bright |
| 27 | 4.1 | Bright |
| 28 | 4.1 | Bright |
| 29 | 4.0 | Bright |
| 30 | 4.0 | Bright |
| 31 | 4.0 | Moderate |
Hazard calendar for Sōma
In August, Sōma sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Sōma sits in the Pacific typhoon belt; the season peaks July–October.
Sōma's rainy season runs March–October, when most of the year's rain falls.
Is August a good time to visit Sōma?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is a reasonable time to visit Sōma for sightseeing.
What to pack for Sōma in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Sōma sees daytime highs around 25°C and nights near 23°C. Worth packing: light clothes and rain gear. About 13 days see rain.
Sea temperature near Sōma in August
The nearest coast averages about 24°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 19 km away) is warmest in August at about 24°C and coldest in March near 9°C.
It's comfortable for a long swim from Jul 7 to Oct 10 — about 3.2 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 12 | 9 | 9 | 11 | 14 | 18 | 21 | 24 | 23 | 19 | 17 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 12 | Bracing |
| Feb | 9 | Bracing |
| Mar | 9 | Bracing |
| Apr | 11 | Bracing |
| May | 14 | Bracing |
| Jun | 18 | Cool |
| Jul | 21 | Refreshing |
| Aug | 24 | Refreshing |
| Sep | 23 | Refreshing |
| Oct | 19 | Cool |
| Nov | 17 | Cool |
| Dec | 14 | Bracing |
UV index in Sōma in August
Clear-sky midday UV in August 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 Sōma peaks around July 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 4 | 6 | 8 | 8 | 9 | 9 | 8 | 5 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Sōma in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Sōma is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 9 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) | 10 | 13 | 19 | 20 | 19 | 14 | 12 | 10 | 10 | 10 | 10 | 9 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 13 | Moderate |
| Mar | 19 | Moderate |
| Apr | 20 | Moderate |
| May | 19 | Moderate |
| Jun | 14 | Moderate |
| Jul | 12 | Good |
| Aug | 10 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 10 | Good |
| Dec | 9 | Good |
Where is Sōma?
Sōma sits at 37.8°N, 140.9°E, 9 m above sea level, in Japan. The nearest listed city is Minami-Sōma, 19 km away.
Topography around Sōma
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sōma.
Within 3 km, the terrain around Sōma has only modest variations in elevation — a maximum elevation change of 79 m around an average of 14 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 689 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,031 m.
The land around Sōma is covered by cropland (41%), artificial surfaces (27%) and trees (25%) within 3 km, trees (45%) and water (35%) within 16 km, and trees (54%) and water (32%) 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 Sōma (37.7928°, 140.9294°, elevation 9 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).