Chiayi City weather in March
In March, Chiayi City sees average daytime highs of 24°C and overnight lows near 16°C, with 85 mm of rain across 13.3 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.
Highs climb over the month, from about 22°C in the first days to 25°C by the end. The sky is clear or mostly clear about 35% of the time in March, and the air most often feels humid.
Daylight stretches from about 11 h 30 min at the start of March to 12 h 12 min by month's end. Set against the rest of the year, March is Chiayi City's 5th-clearest and 6th-windiest month. For the whole year in context, see Chiayi City's year-round climate.
- Daytime high
- 24°
- 9th warmest
- Overnight low
- 16°
- 4th coldest
- Rainfall
- 85 mm
- 13.3 wet days
- Daylight
- 11 h 48 min
- 6:13 AM – 6:03 PM
- Cloud cover
- 54%
- 5th clearest
- Wind
- 6 km/h
- 6th windiest
- Solar energy
- 5.25 kWh/m²
- Travel score
- 6.4
- out of 10
Temperature in March
Highs climb over the month, from about 22°C in the first days to 25°C by the end.
A typical March day in Chiayi City reaches about 24°C in the afternoon and slips back to 16°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 27°C. Set against its neighbours, March runs about 2°C warmer than February and about 3°C cooler than April.
| 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) | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 |
| Avg low (°C) | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 22 | 14 |
| 2 | 22 | 14 |
| 3 | 22 | 14 |
| 4 | 23 | 14 |
| 5 | 23 | 15 |
| 6 | 23 | 15 |
| 7 | 23 | 15 |
| 8 | 23 | 15 |
| 9 | 23 | 15 |
| 10 | 23 | 15 |
| 11 | 23 | 15 |
| 12 | 23 | 15 |
| 13 | 23 | 15 |
| 14 | 23 | 15 |
| 15 | 24 | 16 |
| 16 | 24 | 16 |
| 17 | 24 | 16 |
| 18 | 24 | 16 |
| 19 | 24 | 16 |
| 20 | 24 | 16 |
| 21 | 24 | 16 |
| 22 | 24 | 16 |
| 23 | 24 | 16 |
| 24 | 24 | 16 |
| 25 | 24 | 17 |
| 26 | 24 | 17 |
| 27 | 25 | 17 |
| 28 | 25 | 17 |
| 29 | 25 | 17 |
| 30 | 25 | 17 |
| 31 | 25 | 17 |
How March really feels in Chiayi City
Once humidity and wind are folded in, March 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.
March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Chiayi City weather by month
How March compares with the rest of the year at a glance. March is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 12° | 53 | 10 | 10.7 | 6.6 |
| Feb | 21° / 13° | 62 | 11.6 | 11.2 | 6.3 |
| Mar | 24° / 16° | 85 | 13.3 | 11.8 | 6.4 |
| Apr | 26° / 19° | 144 | 16 | 12.5 | 5.7 |
| May | 28° / 21° | 270 | 22.1 | 13.1 | 4.3 |
| Jun | 29° / 23° | 365 | 24.2 | 13.4 | 3.3 |
| Jul | 30° / 24° | 555 | 26.7 | 13.3 | 3.0 |
| Aug | 30° / 24° | 667 | 28.5 | 12.8 | 2.9 |
| Sep | 29° / 23° | 436 | 24 | 12.1 | 3.6 |
| Oct | 27° / 20° | 207 | 18.6 | 11.4 | 5.3 |
| Nov | 25° / 18° | 81 | 12 | 10.9 | 6.7 |
| Dec | 22° / 14° | 60 | 10.7 | 10.6 | 6.8 |
Cloud cover in March
The sky is clear or mostly clear about 35% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 21% of March, with mostly cloudy or overcast conditions the remaining 44%. 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 (%) | 61 | 61 | 61 | 61 | 61 | 61 | 60 | 60 | 60 | 60 | 60 | 58 | 58 | 57 | 56 | 56 | 54 | 54 | 53 | 53 | 53 | 52 | 52 | 51 | 50 | 50 | 49 | 50 | 50 | 50 | 50 |
| Cloudier (%) | 39 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 42 | 42 | 43 | 44 | 44 | 46 | 46 | 47 | 47 | 47 | 48 | 48 | 49 | 50 | 50 | 51 | 50 | 50 | 50 | 50 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 61 | 39 |
| 2 | 61 | 39 |
| 3 | 61 | 39 |
| 4 | 61 | 39 |
| 5 | 61 | 39 |
| 6 | 61 | 39 |
| 7 | 60 | 40 |
| 8 | 60 | 40 |
| 9 | 60 | 40 |
| 10 | 60 | 40 |
| 11 | 60 | 40 |
| 12 | 58 | 42 |
| 13 | 58 | 42 |
| 14 | 57 | 43 |
| 15 | 56 | 44 |
| 16 | 56 | 44 |
| 17 | 54 | 46 |
| 18 | 54 | 46 |
| 19 | 53 | 47 |
| 20 | 53 | 47 |
| 21 | 53 | 47 |
| 22 | 52 | 48 |
| 23 | 52 | 48 |
| 24 | 51 | 49 |
| 25 | 50 | 50 |
| 26 | 50 | 50 |
| 27 | 49 | 51 |
| 28 | 50 | 50 |
| 29 | 50 | 50 |
| 30 | 50 | 50 |
| 31 | 50 | 50 |
Chance of precipitation in March
Chiayi City gets around 85 mm of rain over 13.3 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 44% and peaks near 50% 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 (%) | 44 | 44 | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 43 | 43 | 44 | 44 | 45 | 46 | 47 | 48 | 48 | 49 | 50 |
| Rain chance (%) | |
|---|---|
| 1 | 44 |
| 2 | 44 |
| 3 | 44 |
| 4 | 44 |
| 5 | 44 |
| 6 | 43 |
| 7 | 43 |
| 8 | 43 |
| 9 | 42 |
| 10 | 42 |
| 11 | 42 |
| 12 | 42 |
| 13 | 41 |
| 14 | 41 |
| 15 | 41 |
| 16 | 41 |
| 17 | 42 |
| 18 | 42 |
| 19 | 42 |
| 20 | 42 |
| 21 | 43 |
| 22 | 43 |
| 23 | 44 |
| 24 | 44 |
| 25 | 45 |
| 26 | 46 |
| 27 | 47 |
| 28 | 48 |
| 29 | 48 |
| 30 | 49 |
| 31 | 50 |
Humidity in March
Most of March feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the humid band about 47% of days. Sticky, muggy-or-worse air turns up on roughly 9% 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 (%) | 21 | 20 | 20 | 20 | 20 | 19 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Comfortable (%) | 47 | 46 | 46 | 45 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 32 | 31 | 30 | 29 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 19 | 18 | 17 |
| Humid (%) | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 40 | 41 | 42 | 44 | 46 | 47 | 49 | 51 | 52 | 53 | 53 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 56 | 54 | 53 | 53 |
| Muggy (%) | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 21 | 23 | 24 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 21 | 47 | 31 | 1 |
| 2 | 20 | 46 | 32 | 1 |
| 3 | 20 | 46 | 33 | 1 |
| 4 | 20 | 45 | 34 | 1 |
| 5 | 20 | 44 | 35 | 1 |
| 6 | 19 | 43 | 36 | 2 |
| 7 | 19 | 42 | 37 | 2 |
| 8 | 18 | 41 | 38 | 2 |
| 9 | 17 | 40 | 40 | 3 |
| 10 | 16 | 39 | 41 | 3 |
| 11 | 15 | 38 | 42 | 4 |
| 12 | 14 | 37 | 44 | 5 |
| 13 | 13 | 36 | 46 | 5 |
| 14 | 12 | 35 | 47 | 6 |
| 15 | 11 | 34 | 49 | 7 |
| 16 | 10 | 32 | 51 | 7 |
| 17 | 9 | 31 | 52 | 8 |
| 18 | 8 | 30 | 53 | 9 |
| 19 | 8 | 29 | 53 | 10 |
| 20 | 7 | 27 | 55 | 11 |
| 21 | 7 | 26 | 55 | 12 |
| 22 | 7 | 25 | 55 | 13 |
| 23 | 6 | 24 | 56 | 14 |
| 24 | 6 | 23 | 56 | 15 |
| 25 | 6 | 22 | 56 | 16 |
| 26 | 6 | 21 | 56 | 17 |
| 27 | 6 | 20 | 56 | 18 |
| 28 | 6 | 19 | 56 | 19 |
| 29 | 6 | 19 | 54 | 21 |
| 30 | 6 | 18 | 53 | 23 |
| 31 | 6 | 17 | 53 | 24 |
Wind in March
Winds average 6 km/h in March.
Across March, daily wind ranges from about 6 km/h on the calmest days to 6 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) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 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 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | calm |
| 15 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in March
Daylight runs from about 11 h 30 min at the start of March to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over March. Sunrise moves from 6:27 AM to 5:58 AM, and sunset from 5:56 PM to 6:09 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) | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 |
| Sunrise (AM) | 6:27 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:22 | 6:21 | 6:20 | 6:19 | 6:18 | 6:17 | 6:16 | 6:15 | 6:14 | 6:13 | 6:12 | 6:11 | 6:10 | 6:09 | 6:08 | 6:07 | 6:06 | 6:05 | 6:04 | 6:03 | 6:02 | 6:01 | 6:00 | 5:59 | 5:58 |
| Sunset (PM) | 5:56 | 5:57 | 5:57 | 5:58 | 5:58 | 5:58 | 5:59 | 5:59 | 6:00 | 6:00 | 6:01 | 6:01 | 6:02 | 6:02 | 6:02 | 6:03 | 6:03 | 6:04 | 6:04 | 6:04 | 6:05 | 6:05 | 6:06 | 6:06 | 6:06 | 6:07 | 6:07 | 6:07 | 6:08 | 6:08 | 6:09 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 6:27 | 5:56 |
| 2 | 11.5 | 6:26 | 5:57 |
| 3 | 11.5 | 6:25 | 5:57 |
| 4 | 11.6 | 6:24 | 5:58 |
| 5 | 11.6 | 6:23 | 5:58 |
| 6 | 11.6 | 6:22 | 5:58 |
| 7 | 11.6 | 6:22 | 5:59 |
| 8 | 11.6 | 6:21 | 5:59 |
| 9 | 11.7 | 6:20 | 6:00 |
| 10 | 11.7 | 6:19 | 6:00 |
| 11 | 11.7 | 6:18 | 6:01 |
| 12 | 11.7 | 6:17 | 6:01 |
| 13 | 11.8 | 6:16 | 6:02 |
| 14 | 11.8 | 6:15 | 6:02 |
| 15 | 11.8 | 6:14 | 6:02 |
| 16 | 11.8 | 6:13 | 6:03 |
| 17 | 11.9 | 6:12 | 6:03 |
| 18 | 11.9 | 6:11 | 6:04 |
| 19 | 11.9 | 6:10 | 6:04 |
| 20 | 11.9 | 6:09 | 6:04 |
| 21 | 11.9 | 6:08 | 6:05 |
| 22 | 12.0 | 6:07 | 6:05 |
| 23 | 12.0 | 6:06 | 6:06 |
| 24 | 12.0 | 6:05 | 6:06 |
| 25 | 12.0 | 6:04 | 6:06 |
| 26 | 12.1 | 6:03 | 6:07 |
| 27 | 12.1 | 6:02 | 6:07 |
| 28 | 12.1 | 6:01 | 6:07 |
| 29 | 12.1 | 6:00 | 6:08 |
| 30 | 12.2 | 5:59 | 6:08 |
| 31 | 12.2 | 5:58 | 6:09 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 5.25 kWh/m².
For context, solar energy here swings from a low near 3.6 kWh/m² to a high of 5.62 kWh/m² in April across the year — March's 5.25 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 | 4.9 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 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 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.8 | Bright |
| 4 | 4.9 | Bright |
| 5 | 4.9 | Bright |
| 6 | 4.9 | Bright |
| 7 | 5.0 | Bright |
| 8 | 5.0 | Bright |
| 9 | 5.0 | Bright |
| 10 | 5.1 | Bright |
| 11 | 5.1 | Bright |
| 12 | 5.1 | Bright |
| 13 | 5.1 | Bright |
| 14 | 5.2 | Bright |
| 15 | 5.2 | Bright |
| 16 | 5.2 | Bright |
| 17 | 5.3 | Bright |
| 18 | 5.3 | Bright |
| 19 | 5.3 | Bright |
| 20 | 5.3 | Bright |
| 21 | 5.4 | Bright |
| 22 | 5.4 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.4 | 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 Chiayi City
In March, Chiayi City sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Chiayi City sits in the Pacific typhoon belt; the season peaks July–October.
Chiayi City's monsoon runs June–September, when most of the year's rain falls.
Is March a good time to visit Chiayi City?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a reasonable time to visit Chiayi City for sightseeing.
What to pack for Chiayi City in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Chiayi City sees daytime highs around 24°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.
Sea temperature near Chiayi City in March
The nearest coast averages about 23°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 35 km away) is warmest in July at about 29°C and coldest in January near 22°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 22 | 22 | 23 | 25 | 27 | 28 | 29 | 29 | 28 | 27 | 25 | 23 |
| Comfort | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 22 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 23 | Refreshing |
| Apr | 25 | Warm |
| May | 27 | Warm |
| Jun | 28 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Tropical |
| Oct | 27 | Warm |
| Nov | 25 | Warm |
| Dec | 23 | Refreshing |
UV index in Chiayi City in March
Clear-sky midday UV in March peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chiayi City peaks around June 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 8 | 10 | 8 | 10 | 12 | 10 | 11 | 9 | 7 | 7 | 6 |
| Level | High | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 10 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 10 | Extreme |
| Aug | 11 | Extreme |
| Sep | 9 | Very high |
| Oct | 7 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Chiayi City in March
Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.
Air quality in Chiayi City is worst in March — around 40 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (July, 23 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) | 36 | 36 | 40 | 36 | 28 | 24 | 23 | 25 | 31 | 33 | 34 | 33 |
| Level | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 36 | Poor |
| Feb | 36 | Poor |
| Mar | 40 | Poor |
| Apr | 36 | Poor |
| May | 28 | Moderate |
| Jun | 24 | Moderate |
| Jul | 23 | Moderate |
| Aug | 25 | Moderate |
| Sep | 31 | Moderate |
| Oct | 33 | Moderate |
| Nov | 34 | Moderate |
| Dec | 33 | Moderate |
Where is Chiayi City?
Chiayi City sits at 23.5°N, 120.4°E, 45 m above sea level, in Taiwan. The nearest listed city is Taibao, 12 km away.
Topography around Chiayi City
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chiayi City.
Within 3 km, the terrain around Chiayi City has only modest variations in elevation — a maximum elevation change of 84 m around an average of 40 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 860 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,887 m.
The land around Chiayi City is covered by artificial surfaces (65%) and trees (23%) within 3 km, trees (46%) and cropland (37%) within 16 km, and trees (47%) and water (32%) within 80 km.
Taiwan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 110 / 220 V · 60 Hz
- Happiness
- 6.7 / 10
- World Happiness, 2025
- 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 Chiayi City (23.4792°, 120.4489°, elevation 45 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).