Chiayi is at its most pleasant from late November to March. For sun, aim for mid October to mid November; for walking, go from late December to early February.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
The sun season here runs from mid October to mid November, with a second spell from April to early May. It peaks in early November, at 68. The weakest stretch is from mid January to early February, when it drops to 13, mostly because it is too cool. The clearest skies come in November, when the sky is typically 60% covered at midday (partly cloudy).
For being outside, go from late November to March. It peaks in early January, at 79. Avoid June to September for this: it falls to 1, mostly because it is too hot.
The walking season here runs from late December to early February. It peaks in mid January, at 67. The weakest stretch is from May to mid October, when it drops to 0, mostly because it is too warm.
The year, measured
The average temperature in Chiayi over the whole year is 24°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 16°C. The rainy (wet) season in Chiayi runs from June to August, peaking in August with a 41% chance of rain on a given day. The dry season is September to May; November is the driest month, at 10%. Winds in Chiayi are highest in December, averaging 4.2 m/s (15 km/h), and lightest in August, at 2.8 m/s (10 km/h). The prevailing wind is from the NW. The clearest skies in Chiayi come in November, when the sky is typically 62% covered; June is the cloudiest month, at 72%.
Month by month Chiayi climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 21°C | 16°C | 19°C | 12% | 65% | 3.9 m/s | 74 | 16 | 64 |
| February | 22°C | 16°C | 20°C | 13% | 65% | 3.9 m/s | 70 | 23 | 57 |
| March | 24°C | 19°C | 24°C | 16% | 64% | 3.4 m/s | 64 | 44 | 36 |
| April | 27°C | 22°C | 28°C | 21% | 67% | 3.2 m/s | 37 | 60 | 14 |
| May | 29°C | 25°C | 31°C | 23% | 70% | 3.1 m/s | 15 | 49 | 4 |
| June | 31°C | 27°C | 34°C | 35% | 72% | 3.0 m/s | 3 | 27 | 0 |
| July | 31°C | 27°C | 35°C | 34% | 69% | 3.3 m/s | 2 | 21 | 0 |
| August | 31°C | 26°C | 35°C | 41% | 71% | 2.8 m/s | 2 | 24 | 0 |
| September | 31°C | 26°C | 34°C | 23% | 65% | 2.9 m/s | 4 | 31 | 0 |
| October | 29°C | 24°C | 31°C | 19% | 63% | 3.4 m/s | 18 | 56 | 4 |
| November | 27°C | 21°C | 27°C | 10% | 62% | 3.4 m/s | 44 | 62 | 16 |
| December | 23°C | 17°C | 22°C | 13% | 64% | 4.2 m/s | 74 | 28 | 52 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Chiayi weather by season
Year round, Chiayi has days of about 21°C at their warmest in January, its coolest month, and 31°C in July, its warmest; the coolest hours of the day run from 16°C to 27°C through the year, and the average temperature over the year is 24°C around the clock. Rain is most likely around August and least likely around November. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Chiayi weather in winterDecember to February
Winter in Chiayi has typical daily highs of about 22°C and lows of about 16°C, with a 13% chance of rain on a given day.
Chiayi weather in springMarch to May
Spring in Chiayi has typical daily highs of about 27°C and lows of about 22°C, with a 20% chance of rain on a given day.
Chiayi weather in summerJune to August
Summer in Chiayi has typical daily highs of about 31°C and lows of about 27°C, with a 37% chance of rain on a given day.
Chiayi weather in autumnSeptember to November
Autumn in Chiayi has typical daily highs of about 29°C and lows of about 24°C, with a 17% chance of rain on a given day.
When is the rainy season in Chiayi?
The rainy (wet) season in Chiayi runs from June to August, peaking in August with a 41% chance of rain on a given day. The dry season is September to May; November is the driest month, at 10%.
What time of year is Chiayi windiest?
Winds in Chiayi are highest in December, averaging 4.2 m/s (15 km/h), and lightest in August, at 2.8 m/s (10 km/h). The prevailing wind is from the NW.
What is the average temperature in Chiayi year round?
The average temperature in Chiayi over the whole year is 24°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 16°C.
Where to go instead in late June, the weakest time here for being outside
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.