Katori-shi weather in May
In May, Katori-shi sees average daytime highs of 20°C and overnight lows near 15°C, with 136 mm of rain across 12 wet days and about 13.9 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.
Highs climb over the month, from about 19°C in the first days to 22°C by the end. The sky is clear or mostly clear about 24% of the time in May, and the air most often feels dry.
Daylight stretches from about 13 h 24 min at the start of May to 14 h 12 min by month's end. Set against the rest of the year, May is Katori-shi's 10th-clearest and 7th-windiest month. For the whole year in context, see Katori-shi's year-round climate.
- Daytime high
- 20°
- 6th warmest
- Overnight low
- 15°
- 7th coldest
- Rainfall
- 136 mm
- 12 wet days
- Daylight
- 13 h 54 min
- 4:37 AM – 6:31 PM
- Cloud cover
- 68%
- 10th clearest
- Wind
- 14 km/h
- 7th windiest
- Solar energy
- 5.41 kWh/m²
- Travel score
- 5.9
- out of 10
Temperature in May
Highs climb over the month, from about 19°C in the first days to 22°C by the end.
A typical May day in Katori-shi reaches about 20°C in the afternoon and slips back to 15°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.
| 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) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 |
| Avg low (°C) | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 19 | 13 |
| 2 | 19 | 14 |
| 3 | 19 | 14 |
| 4 | 19 | 14 |
| 5 | 19 | 14 |
| 6 | 19 | 14 |
| 7 | 19 | 14 |
| 8 | 20 | 14 |
| 9 | 20 | 15 |
| 10 | 20 | 15 |
| 11 | 20 | 15 |
| 12 | 20 | 15 |
| 13 | 20 | 15 |
| 14 | 20 | 15 |
| 15 | 20 | 15 |
| 16 | 20 | 15 |
| 17 | 20 | 15 |
| 18 | 21 | 16 |
| 19 | 21 | 16 |
| 20 | 21 | 16 |
| 21 | 21 | 16 |
| 22 | 21 | 16 |
| 23 | 21 | 16 |
| 24 | 21 | 16 |
| 25 | 21 | 16 |
| 26 | 21 | 17 |
| 27 | 21 | 17 |
| 28 | 22 | 17 |
| 29 | 22 | 17 |
| 30 | 22 | 17 |
| 31 | 22 | 17 |
How May really feels in Katori-shi
Once humidity and wind are folded in, May 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.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Katori-shi weather by month
How May compares with the rest of the year at a glance. May is the 6th-warmest and 5th-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° / 4° | 77 | 8 | 0.6 | 9.8 | 2.0 |
| Feb | 9° / 4° | 74 | 8.5 | 0.8 | 10.6 | 2.1 |
| Mar | 12° / 7° | 128 | 12.6 | 0.4 | 11.7 | 3.1 |
| Apr | 16° / 11° | 118 | 12.5 | 0 | 12.9 | 4.9 |
| May | 20° / 15° | 136 | 12 | 0 | 13.9 | 5.9 |
| Jun | 23° / 19° | 157 | 13.6 | 0 | 14.4 | 5.8 |
| Jul | 27° / 22° | 149 | 13.6 | 0 | 14.2 | 5.8 |
| Aug | 28° / 24° | 103 | 10.7 | 0 | 13.4 | 5.7 |
| Sep | 25° / 22° | 171 | 13.8 | 0 | 12.2 | 6.0 |
| Oct | 21° / 17° | 213 | 13 | 0 | 11.1 | 6.0 |
| Nov | 16° / 11° | 107 | 10.7 | 0 | 10.1 | 5.0 |
| Dec | 11° / 6° | 73 | 9.2 | 0 | 9.6 | 3.1 |
Cloud cover in May
The sky is clear or mostly clear about 24% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to cloud over as the month goes on.
| 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 (%) | 44 | 42 | 42 | 42 | 40 | 40 | 39 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 35 | 34 | 35 | 35 | 36 | 36 | 36 | 35 | 34 | 35 | 35 | 35 | 34 | 34 | 34 | 33 | 33 |
| Cloudier (%) | 56 | 58 | 58 | 58 | 60 | 60 | 61 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 65 | 66 | 65 | 65 | 64 | 64 | 64 | 65 | 66 | 65 | 65 | 65 | 66 | 66 | 66 | 67 | 67 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 44 | 56 |
| 2 | 42 | 58 |
| 3 | 42 | 58 |
| 4 | 42 | 58 |
| 5 | 40 | 60 |
| 6 | 40 | 60 |
| 7 | 39 | 61 |
| 8 | 37 | 63 |
| 9 | 37 | 63 |
| 10 | 37 | 63 |
| 11 | 36 | 64 |
| 12 | 36 | 64 |
| 13 | 36 | 64 |
| 14 | 36 | 64 |
| 15 | 35 | 65 |
| 16 | 34 | 66 |
| 17 | 35 | 65 |
| 18 | 35 | 65 |
| 19 | 36 | 64 |
| 20 | 36 | 64 |
| 21 | 36 | 64 |
| 22 | 35 | 65 |
| 23 | 34 | 66 |
| 24 | 35 | 65 |
| 25 | 35 | 65 |
| 26 | 35 | 65 |
| 27 | 34 | 66 |
| 28 | 34 | 66 |
| 29 | 34 | 66 |
| 30 | 33 | 67 |
| 31 | 33 | 67 |
Chance of precipitation in May
Katori-shi gets around 136 mm of rain over 12 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 38% and peaks near 40% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 38 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 38 | 38 | 38 | 37 | 37 | 37 |
| Rain chance (%) | |
|---|---|
| 1 | 38 |
| 2 | 38 |
| 3 | 37 |
| 4 | 37 |
| 5 | 37 |
| 6 | 37 |
| 7 | 37 |
| 8 | 37 |
| 9 | 37 |
| 10 | 38 |
| 11 | 38 |
| 12 | 38 |
| 13 | 39 |
| 14 | 39 |
| 15 | 40 |
| 16 | 40 |
| 17 | 40 |
| 18 | 40 |
| 19 | 40 |
| 20 | 40 |
| 21 | 40 |
| 22 | 40 |
| 23 | 39 |
| 24 | 39 |
| 25 | 39 |
| 26 | 38 |
| 27 | 38 |
| 28 | 38 |
| 29 | 37 |
| 30 | 37 |
| 31 | 37 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 39% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 66 | 63 | 62 | 60 | 58 | 55 | 53 | 52 | 51 | 49 | 47 | 46 | 44 | 42 | 40 | 38 | 37 | 35 | 33 | 31 | 29 | 28 | 26 | 24 | 23 | 22 | 20 | 19 | 18 | 17 | 16 |
| Comfortable (%) | 27 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 42 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 41 | 40 | 39 | 38 | 37 | 36 |
| Humid (%) | 7 | 8 | 8 | 9 | 10 | 11 | 12 | 12 | 13 | 14 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 24 | 25 | 27 | 28 | 30 | 32 | 33 | 35 | 36 | 38 | 39 | 40 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 6 | 6 | 7 | 8 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 66 | 27 | 7 | 0 |
| 2 | 63 | 29 | 8 | 0 |
| 3 | 62 | 30 | 8 | 0 |
| 4 | 60 | 31 | 9 | 0 |
| 5 | 58 | 32 | 10 | 0 |
| 6 | 55 | 33 | 11 | 1 |
| 7 | 53 | 34 | 12 | 1 |
| 8 | 52 | 35 | 12 | 1 |
| 9 | 51 | 35 | 13 | 1 |
| 10 | 49 | 36 | 14 | 1 |
| 11 | 47 | 37 | 14 | 1 |
| 12 | 46 | 38 | 15 | 1 |
| 13 | 44 | 39 | 16 | 1 |
| 14 | 42 | 40 | 17 | 1 |
| 15 | 40 | 41 | 18 | 1 |
| 16 | 38 | 42 | 19 | 1 |
| 17 | 37 | 42 | 20 | 2 |
| 18 | 35 | 43 | 21 | 2 |
| 19 | 33 | 43 | 22 | 2 |
| 20 | 31 | 43 | 24 | 2 |
| 21 | 29 | 43 | 25 | 2 |
| 22 | 28 | 43 | 27 | 3 |
| 23 | 26 | 43 | 28 | 3 |
| 24 | 24 | 42 | 30 | 3 |
| 25 | 23 | 42 | 32 | 4 |
| 26 | 22 | 41 | 33 | 4 |
| 27 | 20 | 40 | 35 | 5 |
| 28 | 19 | 39 | 36 | 6 |
| 29 | 18 | 38 | 38 | 6 |
| 30 | 17 | 37 | 39 | 7 |
| 31 | 16 | 36 | 40 | 8 |
Wind in May
Winds average 14 km/h in May.
Across May, daily wind ranges from about 13 km/h on the calmest days to 15 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) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 15 | light breeze |
| 2 | 15 | light breeze |
| 3 | 15 | light breeze |
| 4 | 15 | light breeze |
| 5 | 15 | light breeze |
| 6 | 15 | light breeze |
| 7 | 15 | light breeze |
| 8 | 15 | light breeze |
| 9 | 14 | light breeze |
| 10 | 14 | light breeze |
| 11 | 14 | light breeze |
| 12 | 14 | light breeze |
| 13 | 14 | light breeze |
| 14 | 14 | light breeze |
| 15 | 14 | light breeze |
| 16 | 14 | light breeze |
| 17 | 14 | light breeze |
| 18 | 14 | light breeze |
| 19 | 14 | light breeze |
| 20 | 14 | light breeze |
| 21 | 14 | light breeze |
| 22 | 14 | light breeze |
| 23 | 14 | light breeze |
| 24 | 13 | light breeze |
| 25 | 13 | light breeze |
| 26 | 13 | light breeze |
| 27 | 13 | light breeze |
| 28 | 13 | light breeze |
| 29 | 13 | light breeze |
| 30 | 13 | light breeze |
| 31 | 13 | light breeze |
Sunrise & sunset in May
Daylight runs from about 13 h 24 min at the start of May to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 48 minutes over May. Sunrise moves from 4:52 AM to 4:28 AM, and sunset from 6:18 PM to 6:42 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) | 13.4 | 13.5 | 13.5 | 13.5 | 13.6 | 13.6 | 13.6 | 13.7 | 13.7 | 13.7 | 13.8 | 13.8 | 13.8 | 13.8 | 13.9 | 13.9 | 13.9 | 13.9 | 14.0 | 14.0 | 14.0 | 14.0 | 14.1 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 |
| Sunrise (AM) | 4:52 | 4:51 | 4:50 | 4:49 | 4:48 | 4:47 | 4:46 | 4:45 | 4:44 | 4:43 | 4:42 | 4:41 | 4:40 | 4:39 | 4:38 | 4:37 | 4:37 | 4:36 | 4:35 | 4:34 | 4:34 | 4:33 | 4:32 | 4:32 | 4:31 | 4:31 | 4:30 | 4:30 | 4:29 | 4:29 | 4:28 |
| Sunset (PM) | 6:18 | 6:19 | 6:20 | 6:21 | 6:22 | 6:23 | 6:24 | 6:24 | 6:25 | 6:26 | 6:27 | 6:28 | 6:29 | 6:29 | 6:30 | 6:31 | 6:32 | 6:33 | 6:33 | 6:34 | 6:35 | 6:36 | 6:37 | 6:37 | 6:38 | 6:39 | 6:40 | 6:40 | 6:41 | 6:42 | 6:42 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.4 | 4:52 | 6:18 |
| 2 | 13.5 | 4:51 | 6:19 |
| 3 | 13.5 | 4:50 | 6:20 |
| 4 | 13.5 | 4:49 | 6:21 |
| 5 | 13.6 | 4:48 | 6:22 |
| 6 | 13.6 | 4:47 | 6:23 |
| 7 | 13.6 | 4:46 | 6:24 |
| 8 | 13.7 | 4:45 | 6:24 |
| 9 | 13.7 | 4:44 | 6:25 |
| 10 | 13.7 | 4:43 | 6:26 |
| 11 | 13.8 | 4:42 | 6:27 |
| 12 | 13.8 | 4:41 | 6:28 |
| 13 | 13.8 | 4:40 | 6:29 |
| 14 | 13.8 | 4:39 | 6:29 |
| 15 | 13.9 | 4:38 | 6:30 |
| 16 | 13.9 | 4:37 | 6:31 |
| 17 | 13.9 | 4:37 | 6:32 |
| 18 | 13.9 | 4:36 | 6:33 |
| 19 | 14.0 | 4:35 | 6:33 |
| 20 | 14.0 | 4:34 | 6:34 |
| 21 | 14.0 | 4:34 | 6:35 |
| 22 | 14.0 | 4:33 | 6:36 |
| 23 | 14.1 | 4:32 | 6:37 |
| 24 | 14.1 | 4:32 | 6:37 |
| 25 | 14.1 | 4:31 | 6:38 |
| 26 | 14.1 | 4:31 | 6:39 |
| 27 | 14.2 | 4:30 | 6:40 |
| 28 | 14.2 | 4:30 | 6:40 |
| 29 | 14.2 | 4:29 | 6:41 |
| 30 | 14.2 | 4:29 | 6:42 |
| 31 | 14.2 | 4:28 | 6:42 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 5.41 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 5.41 kWh/m² in May across the year — May's 5.41 kWh/m² sits near the top of that range.
| 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) | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.4 | Bright |
| 2 | 5.4 | Bright |
| 3 | 5.4 | Bright |
| 4 | 5.4 | Bright |
| 5 | 5.4 | Bright |
| 6 | 5.4 | Bright |
| 7 | 5.4 | Bright |
| 8 | 5.4 | Bright |
| 9 | 5.4 | Bright |
| 10 | 5.4 | Bright |
| 11 | 5.4 | Bright |
| 12 | 5.4 | Bright |
| 13 | 5.4 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.4 | Bright |
| 16 | 5.4 | Bright |
| 17 | 5.4 | Bright |
| 18 | 5.4 | Bright |
| 19 | 5.4 | Bright |
| 20 | 5.4 | Bright |
| 21 | 5.5 | Bright |
| 22 | 5.5 | Bright |
| 23 | 5.5 | Bright |
| 24 | 5.5 | Bright |
| 25 | 5.5 | Bright |
| 26 | 5.5 | Bright |
| 27 | 5.5 | Bright |
| 28 | 5.5 | Bright |
| 29 | 5.5 | Bright |
| 30 | 5.5 | Bright |
| 31 | 5.5 | Bright |
Hazard calendar for Katori-shi
In May, Katori-shi sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Katori-shi sits in the Pacific typhoon belt; the season peaks July–October.
Is May a good time to visit Katori-shi?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Katori-shi for sightseeing.
What to pack for Katori-shi in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Katori-shi sees daytime highs around 20°C and nights near 15°C. Worth packing: rain gear and sun protection. About 12 days see rain.
Sea temperature near Katori-shi in May
The nearest coast averages about 17°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 28 km away) is warmest in August at about 24°C and coldest in February near 13°C.
It's comfortable for a long swim from Jun 23 to Oct 28 — about 4.2 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 13 | 13 | 15 | 17 | 20 | 22 | 24 | 23 | 21 | 19 | 16 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 13 | Bracing |
| Mar | 13 | Bracing |
| Apr | 15 | Bracing |
| May | 17 | Cool |
| Jun | 20 | Cool |
| Jul | 22 | Refreshing |
| Aug | 24 | Warm |
| Sep | 23 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 16 | Cool |
UV index in Katori-shi in May
Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Katori-shi peaks around August 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 | 10 | 8 | 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 | 10 | Very high |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Katori-shi in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.
Air quality in Katori-shi is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.8× 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 | 18 | 25 | 25 | 24 | 19 | 16 | 15 | 15 | 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 | 18 | Moderate |
| Mar | 25 | Moderate |
| Apr | 25 | Moderate |
| May | 24 | Moderate |
| Jun | 19 | Moderate |
| Jul | 16 | Moderate |
| Aug | 15 | Moderate |
| Sep | 15 | Moderate |
| Oct | 16 | Moderate |
| Nov | 16 | Moderate |
| Dec | 14 | Moderate |
Where is Katori-shi?
Katori-shi sits at 35.9°N, 140.5°E, 6 m above sea level, in Japan. The nearest listed city is Sawara, 2.0 km away.
Topography around Katori-shi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Katori-shi.
Within 3 km, the terrain around Katori-shi has only modest variations in elevation — a maximum elevation change of 59 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 70 m; within 80 km, large variations in elevation — a maximum elevation change of 840 m.
The land around Katori-shi is covered by cropland (38%), trees (23%) and artificial surfaces (23%) within 3 km, cropland (35%) and trees (31%) within 16 km, and water (36%) and trees (25%) 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 Katori-shi (35.8977°, 140.4994°, elevation 6 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).