Tainan weather in June
In June, Tainan has daytime highs averaging 30 °C, nights around 25 °C, with 20 wet days, and a sea temperature of 29 °C. Figures are 1991–2020 climate normals.
- 29.7°C Average high
- 25.3°C Average low
- 20days Wet days
- 383mm Rainfall
- 28.8°C Sea temperature
- 14h Daylight
Daily temperatures through June
How June develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 June | 29.3 °C | 24.9 °C | 65 % |
| 11–20 June | 29.4 °C | 25.3 °C | 74 % |
| 21–30 June | 30.3 °C | 25.8 °C | 58 % |
- Rain is most likely over days 11–20 of June (74 % of days) and least likely over days 21–30 (58 %).
What to expect
| Measure | Typical June | Share of the month |
|---|---|---|
| Days above 25 °C | 30 of 30 | 100 % |
| Days above 30 °C | 15 of 30 | 50 % |
| Days below 0 °C | 0 of 30 | 0 % |
| Days with more than 1 mm rain | 20 of 30 | 66 % |
Conditions in June
| Measure | Average |
|---|---|
| Mean temperature | 27 °C |
| Record high (1991–2020) | 34 °C |
| Record low (1991–2020) | 22 °C |
| Relative humidity | 85 % |
| Wind speed | 15 km/h |
| Cloud cover | 79 % |
June compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| April | 27.1 °C | 116 mm | 58 % |
| May | 28.7 °C | 281 mm | 70 % |
| June | 29.7 °C | 383 mm | 79 % |
| July | 30.2 °C | 308 mm | 73 % |
| August | 29.7 °C | 397 mm | 74 % |
See all twelve months for Tainan
- June is the 3rd warmest month here.
- It is the 11th driest month of the year.
- It ranks 12th for least cloud cover.
- Days last about 14 hours from sunrise to sunset.
- It rains on 20 of 30 days — 66 % of the month.
- Nights are about 4.3 °C cooler than the middle of the day.
- The hottest June day on record since 1991 reached 34 °C, 4.1 °C above the usual daytime high.
- Beach score: 68 / 100 — see how this is calculated.
QuestionsJune in Tainan, answered
How warm is Tainan in June?
Daily highs average 30 °C and nights fall to about 25 °C, a spread of 4.3 °C between afternoon and dawn. That makes June the 3rd warmest month of the year here.
Does it rain much in Tainan in June?
June averages 383 mm of rain, spread over about 20 of the 30 days — 66 % of the month. Cloud cover averages 79 % of the sky.
Is the sea warm enough to swim in June?
The sea averages 29 °C off Tainan in June. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in June?
Tainan averages 14 hours between sunrise and sunset in June. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.