Changsu weather in July
In July, Changsu sees average daytime highs of 27°C and overnight lows near 21°C, with 250 mm of rain across 17.3 wet days and about 14.2 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.
Highs climb over the month, from about 26°C in the first days to 29°C by the end. The sky is clear or mostly clear about 12% of the time in July, and the air most often feels oppressive.
Daylight stretches from about 14 h 24 min at the start of July to 13 h 48 min by month's end. Set against the rest of the year, July is Changsu's 12th-clearest and 7th-windiest month. For the whole year in context, see Changsu's year-round climate.
- Daytime high
- 27°
- 2nd warmest
- Overnight low
- 21°
- 11th coldest
- Rainfall
- 250 mm
- 17.3 wet days
- Daylight
- 14 h 12 min
- 5:30 AM – 7:41 PM
- Cloud cover
- 76%
- 12th clearest
- Wind
- 8 km/h
- 7th windiest
- Solar energy
- 4.48 kWh/m²
- Travel score
- 5.0
- out of 10
Temperature in July
Highs climb over the month, from about 26°C in the first days to 29°C by the end.
A typical July day in Changsu 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 24°C and 31°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.
| 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) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 19 |
| 2 | 26 | 19 |
| 3 | 26 | 19 |
| 4 | 26 | 19 |
| 5 | 26 | 19 |
| 6 | 26 | 20 |
| 7 | 26 | 20 |
| 8 | 26 | 20 |
| 9 | 27 | 20 |
| 10 | 27 | 20 |
| 11 | 27 | 20 |
| 12 | 27 | 20 |
| 13 | 27 | 20 |
| 14 | 27 | 21 |
| 15 | 27 | 21 |
| 16 | 27 | 21 |
| 17 | 28 | 21 |
| 18 | 28 | 21 |
| 19 | 28 | 21 |
| 20 | 28 | 21 |
| 21 | 28 | 21 |
| 22 | 28 | 21 |
| 23 | 28 | 21 |
| 24 | 28 | 22 |
| 25 | 29 | 22 |
| 26 | 29 | 22 |
| 27 | 29 | 22 |
| 28 | 29 | 22 |
| 29 | 29 | 22 |
| 30 | 29 | 22 |
| 31 | 29 | 22 |
How July really feels in Changsu
Once humidity and wind are folded in, July 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.
July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Changsu weather by month
How July compares with the rest of the year at a glance. July is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 2° / -6° | 31 | 6.1 | 5.1 | 9.9 | 0.0 |
| Feb | 5° / -4° | 39 | 5.6 | 3.2 | 10.7 | 0.3 |
| Mar | 11° / 0° | 65 | 8.1 | 2.7 | 11.7 | 2.7 |
| Apr | 17° / 6° | 89 | 8.4 | 0.4 | 12.9 | 5.6 |
| May | 22° / 11° | 97 | 8.7 | 0 | 13.9 | 6.9 |
| Jun | 25° / 16° | 155 | 11.4 | 0 | 14.4 | 6.3 |
| Jul | 27° / 21° | 250 | 17.3 | 0 | 14.2 | 5.0 |
| Aug | 28° / 21° | 211 | 16.7 | 0 | 13.3 | 5.0 |
| Sep | 24° / 16° | 141 | 9.9 | 0 | 12.2 | 6.7 |
| Oct | 19° / 9° | 61 | 6.1 | 0 | 11.1 | 6.8 |
| Nov | 12° / 2° | 48 | 7 | 0.5 | 10.1 | 3.3 |
| Dec | 5° / -4° | 33 | 6.3 | 3.6 | 9.6 | 0.2 |
Cloud cover in July
The sky is clear or mostly clear about 12% of the time in July, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 14% of July, with mostly cloudy or overcast conditions the remaining 74%. Skies tend to open up 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 (%) | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 22 | 22 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 25 | 26 | 27 | 28 | 29 | 29 | 31 | 32 | 32 | 34 | 34 | 35 | 36 | 38 |
| Cloudier (%) | 80 | 80 | 80 | 80 | 79 | 79 | 79 | 79 | 78 | 78 | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 75 | 74 | 73 | 72 | 71 | 71 | 69 | 68 | 68 | 66 | 66 | 65 | 64 | 62 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 20 | 80 |
| 2 | 20 | 80 |
| 3 | 20 | 80 |
| 4 | 20 | 80 |
| 5 | 21 | 79 |
| 6 | 21 | 79 |
| 7 | 21 | 79 |
| 8 | 21 | 79 |
| 9 | 22 | 78 |
| 10 | 22 | 78 |
| 11 | 23 | 77 |
| 12 | 23 | 77 |
| 13 | 24 | 76 |
| 14 | 24 | 76 |
| 15 | 24 | 76 |
| 16 | 25 | 75 |
| 17 | 25 | 75 |
| 18 | 25 | 75 |
| 19 | 26 | 74 |
| 20 | 27 | 73 |
| 21 | 28 | 72 |
| 22 | 29 | 71 |
| 23 | 29 | 71 |
| 24 | 31 | 69 |
| 25 | 32 | 68 |
| 26 | 32 | 68 |
| 27 | 34 | 66 |
| 28 | 34 | 66 |
| 29 | 35 | 65 |
| 30 | 36 | 64 |
| 31 | 38 | 62 |
Chance of precipitation in July
Changsu gets around 250 mm of rain over 17.3 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 55% and peaks near 59% 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 (%) | 56 | 56 | 57 | 57 | 58 | 59 | 59 | 59 | 59 | 59 | 58 | 58 | 58 | 57 | 57 | 56 | 56 | 55 | 55 | 54 | 53 | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 51 | 52 | 52 |
| Rain chance (%) | |
|---|---|
| 1 | 56 |
| 2 | 56 |
| 3 | 57 |
| 4 | 57 |
| 5 | 58 |
| 6 | 59 |
| 7 | 59 |
| 8 | 59 |
| 9 | 59 |
| 10 | 59 |
| 11 | 58 |
| 12 | 58 |
| 13 | 58 |
| 14 | 57 |
| 15 | 57 |
| 16 | 56 |
| 17 | 56 |
| 18 | 55 |
| 19 | 55 |
| 20 | 54 |
| 21 | 53 |
| 22 | 52 |
| 23 | 52 |
| 24 | 51 |
| 25 | 51 |
| 26 | 51 |
| 27 | 51 |
| 28 | 51 |
| 29 | 51 |
| 30 | 52 |
| 31 | 52 |
Humidity in July
Most of July feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the oppressive band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 81% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 9 | 8 | 7 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 34 | 33 | 31 | 29 | 28 | 26 | 25 | 24 | 22 | 21 | 20 | 19 | 17 | 16 | 15 | 13 | 12 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 5 | 5 |
| Muggy (%) | 38 | 40 | 41 | 42 | 43 | 44 | 44 | 45 | 45 | 46 | 46 | 46 | 46 | 45 | 45 | 44 | 43 | 43 | 42 | 41 | 40 | 38 | 37 | 36 | 34 | 33 | 32 | 31 | 30 | 29 | 28 |
| Oppressive (%) | 17 | 18 | 20 | 22 | 23 | 25 | 26 | 27 | 29 | 30 | 31 | 33 | 34 | 36 | 38 | 40 | 42 | 44 | 45 | 47 | 49 | 52 | 54 | 55 | 58 | 59 | 62 | 63 | 64 | 65 | 66 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 1 | 9 | 34 | 38 | 17 | 0 |
| 2 | 1 | 8 | 33 | 40 | 18 | 0 |
| 3 | 1 | 7 | 31 | 41 | 20 | 0 |
| 4 | 1 | 6 | 29 | 42 | 22 | 0 |
| 5 | 0 | 5 | 28 | 43 | 23 | 0 |
| 6 | 0 | 5 | 26 | 44 | 25 | 0 |
| 7 | 0 | 4 | 25 | 44 | 26 | 0 |
| 8 | 0 | 4 | 24 | 45 | 27 | 0 |
| 9 | 0 | 3 | 22 | 45 | 29 | 0 |
| 10 | 0 | 3 | 21 | 46 | 30 | 0 |
| 11 | 0 | 3 | 20 | 46 | 31 | 0 |
| 12 | 0 | 3 | 19 | 46 | 33 | 0 |
| 13 | 0 | 2 | 17 | 46 | 34 | 0 |
| 14 | 0 | 2 | 16 | 45 | 36 | 0 |
| 15 | 0 | 2 | 15 | 45 | 38 | 0 |
| 16 | 0 | 2 | 13 | 44 | 40 | 0 |
| 17 | 0 | 2 | 12 | 43 | 42 | 0 |
| 18 | 0 | 1 | 11 | 43 | 44 | 1 |
| 19 | 0 | 1 | 10 | 42 | 45 | 1 |
| 20 | 0 | 1 | 9 | 41 | 47 | 1 |
| 21 | 0 | 1 | 9 | 40 | 49 | 1 |
| 22 | 0 | 1 | 8 | 38 | 52 | 1 |
| 23 | 0 | 1 | 7 | 37 | 54 | 1 |
| 24 | 0 | 1 | 7 | 36 | 55 | 1 |
| 25 | 0 | 1 | 6 | 34 | 58 | 1 |
| 26 | 0 | 1 | 6 | 33 | 59 | 1 |
| 27 | 0 | 0 | 5 | 32 | 62 | 1 |
| 28 | 0 | 0 | 5 | 31 | 63 | 1 |
| 29 | 0 | 0 | 5 | 30 | 64 | 1 |
| 30 | 0 | 0 | 5 | 29 | 65 | 1 |
| 31 | 0 | 0 | 5 | 28 | 66 | 1 |
Wind in July
Winds average 8 km/h in July.
Across July, daily wind ranges from about 8 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 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 | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | 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 |
| 31 | 8 | calm |
Sunrise & sunset in July
Daylight runs from about 14 h 24 min at the start of July to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 36 minutes over July. Sunrise moves from 5:22 AM to 5:41 AM, and sunset from 7:45 PM to 7:32 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) | 14.4 | 14.4 | 14.4 | 14.4 | 14.4 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.1 | 14.1 | 14.1 | 14.1 | 14.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.9 | 13.9 | 13.9 | 13.8 |
| Sunrise (AM) | 5:22 | 5:22 | 5:23 | 5:23 | 5:23 | 5:24 | 5:24 | 5:25 | 5:26 | 5:26 | 5:27 | 5:27 | 5:28 | 5:28 | 5:29 | 5:30 | 5:30 | 5:31 | 5:32 | 5:32 | 5:33 | 5:34 | 5:35 | 5:35 | 5:36 | 5:37 | 5:38 | 5:38 | 5:39 | 5:40 | 5:41 |
| Sunset (PM) | 7:45 | 7:45 | 7:45 | 7:45 | 7:45 | 7:44 | 7:44 | 7:44 | 7:44 | 7:44 | 7:43 | 7:43 | 7:43 | 7:42 | 7:42 | 7:41 | 7:41 | 7:40 | 7:40 | 7:39 | 7:39 | 7:38 | 7:38 | 7:37 | 7:36 | 7:35 | 7:35 | 7:34 | 7:33 | 7:32 | 7:32 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.4 | 5:22 | 7:45 |
| 2 | 14.4 | 5:22 | 7:45 |
| 3 | 14.4 | 5:23 | 7:45 |
| 4 | 14.4 | 5:23 | 7:45 |
| 5 | 14.4 | 5:23 | 7:45 |
| 6 | 14.3 | 5:24 | 7:44 |
| 7 | 14.3 | 5:24 | 7:44 |
| 8 | 14.3 | 5:25 | 7:44 |
| 9 | 14.3 | 5:26 | 7:44 |
| 10 | 14.3 | 5:26 | 7:44 |
| 11 | 14.3 | 5:27 | 7:43 |
| 12 | 14.3 | 5:27 | 7:43 |
| 13 | 14.2 | 5:28 | 7:43 |
| 14 | 14.2 | 5:28 | 7:42 |
| 15 | 14.2 | 5:29 | 7:42 |
| 16 | 14.2 | 5:30 | 7:41 |
| 17 | 14.2 | 5:30 | 7:41 |
| 18 | 14.2 | 5:31 | 7:40 |
| 19 | 14.1 | 5:32 | 7:40 |
| 20 | 14.1 | 5:32 | 7:39 |
| 21 | 14.1 | 5:33 | 7:39 |
| 22 | 14.1 | 5:34 | 7:38 |
| 23 | 14.0 | 5:35 | 7:38 |
| 24 | 14.0 | 5:35 | 7:37 |
| 25 | 14.0 | 5:36 | 7:36 |
| 26 | 14.0 | 5:37 | 7:35 |
| 27 | 14.0 | 5:38 | 7:35 |
| 28 | 13.9 | 5:38 | 7:34 |
| 29 | 13.9 | 5:39 | 7:33 |
| 30 | 13.9 | 5:40 | 7:32 |
| 31 | 13.8 | 5:41 | 7:32 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 4.48 kWh/m².
For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 5.83 kWh/m² in May across the year — July's 4.48 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) | 4.4 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.4 | 4.5 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 |
| 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 | 4.4 | Bright |
| 2 | 4.3 | Bright |
| 3 | 4.3 | Bright |
| 4 | 4.3 | Bright |
| 5 | 4.3 | Bright |
| 6 | 4.3 | Bright |
| 7 | 4.3 | Bright |
| 8 | 4.3 | Bright |
| 9 | 4.3 | Bright |
| 10 | 4.3 | Bright |
| 11 | 4.3 | Bright |
| 12 | 4.3 | Bright |
| 13 | 4.4 | Bright |
| 14 | 4.4 | Bright |
| 15 | 4.4 | Bright |
| 16 | 4.5 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.5 | Bright |
| 19 | 4.6 | Bright |
| 20 | 4.6 | Bright |
| 21 | 4.6 | Bright |
| 22 | 4.7 | Bright |
| 23 | 4.7 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.8 | Bright |
| 27 | 4.8 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.8 | Bright |
| 31 | 4.8 | Bright |
Hazard calendar for Changsu
In July, Changsu sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Changsu's rainy season runs June–September, when most of the year's rain falls.
Is July a good time to visit Changsu?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a reasonable time to visit Changsu for sightseeing.
What to pack for Changsu in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Changsu sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. About 17 days see rain.
UV index in Changsu in July
Clear-sky midday UV in July 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 Changsu peaks around August 16 at about 9 (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 | 3 | 6 | 7 | 8 | 8 | 8 | 9 | 8 | 6 | 4 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 6 | High |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Changsu in July
Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.
Air quality in Changsu is worst in March — around 69 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (July, 39 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) | 57 | 61 | 69 | 59 | 52 | 49 | 39 | 40 | 51 | 58 | 61 | 54 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Poor | Poor | Unhealthy | Unhealthy | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 57 | Unhealthy |
| Feb | 61 | Unhealthy |
| Mar | 69 | Unhealthy |
| Apr | 59 | Unhealthy |
| May | 52 | Poor |
| Jun | 49 | Poor |
| Jul | 39 | Poor |
| Aug | 40 | Poor |
| Sep | 51 | Poor |
| Oct | 58 | Unhealthy |
| Nov | 61 | Unhealthy |
| Dec | 54 | Poor |
Where is Changsu?
Changsu sits at 35.6°N, 127.5°E, 411 m above sea level, in South Korea. The nearest listed city is Jinan-gun, 18 km away.
Topography around Changsu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Changsu.
Within 3 km, the terrain around Changsu has significant variations in elevation — a maximum elevation change of 588 m around an average of 527 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,136 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,879 m.
The land around Changsu is covered by trees (55%) and cropland (25%) within 3 km, trees (80%) within 16 km, and trees (74%) within 80 km.
South Korea travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 220 V · 60 Hz
- Prices
- ≈ 57% of US
- price level, 2025
- GDP per capita
- $36,227
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.5
- per 100k, 2023
- Road deaths
- 8.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 522
- 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 Changsu (35.6484°, 127.5152°, elevation 411 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. 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).