Keelung climate
Keelung (Taiwan) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 23 °C74 °F, and about 1,946 mm77 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Keelung climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1966 | 1661 | 1864 | 993.9 |
| Feb | 2068 | 1762 | 1865 | 923.6 |
| Mar | 2171 | 1864 | 2067 | 1315.1 |
| Apr | 2476 | 2169 | 2272 | 1265.0 |
| May | 2781 | 2475 | 2578 | 2289.0 |
| Jun | 2984 | 2679 | 2882 | 26210 |
| Jul | 3086 | 2781 | 2984 | 1626.4 |
| Aug | 3086 | 2781 | 2984 | 26310 |
| Sep | 2883 | 2679 | 2781 | 2529.9 |
| Oct | 2678 | 2374 | 2576 | 1164.6 |
| Nov | 2474 | 2170 | 2272 | 1154.5 |
| Dec | 2069 | 1864 | 1966 | 1003.9 |
| Year | 3086 | 1661 | 2374 | 1,94677 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 86% | 2.0 | 10:44 |
| Feb | 83% | 86% | 2.3 | 11:17 |
| Mar | 82% | 86% | 3.0 | 11:57 |
| Apr | 83% | 83% | 3.7 | 12:43 |
| May | 85% | 82% | 4.2 | 13:21 |
| Jun | 87% | 81% | 4.9 | 13:41 |
| Jul | 85% | 60% | 6.2 | 13:33 |
| Aug | 85% | 60% | 5.7 | 13:00 |
| Sep | 84% | 67% | 4.6 | 12:16 |
| Oct | 81% | 72% | 3.5 | 11:31 |
| Nov | 82% | 81% | 2.4 | 10:53 |
| Dec | 80% | 86% | 1.9 | 10:35 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Keelung is like
The warmest month is July, with an average high of 30 °C86 °F and a low of 27 °C81 °F. The coldest is January, when highs average 19 °C66 °F and lows 16 °C61 °F. There is a clear seasonal cycle, with 11.3 °C20.3 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,946 mm77 in of precipitation per year. The wettest three-month stretch is June–August, which brings 35% of the annual total. The wettest month is August (263 mm10 in), the driest is February (92 mm3.6 in).
Relative humidity ranges from 80% in December to 87% in June. The clearest skies (lowest average cloud amount, 60%) are typical of August. Average wind speed near the ground ranges from 10 km/h (6 mph) in June to 20 km/h (12 mph) in December. Daylight lasts from about 10.6 hours in December to 13.7 hours in June.
Best time to visit Keelung
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–February and April: average highs of 19 °C66 °F to 24 °C76 °F with 92 mm3.6 in to 126 mm5.0 in of precipitation per month.
The most challenging month is August, which is very wet (263 mm10 in) and humid (85% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Keelung
- Winter (December–February) — highs 1966 to 20 °C69 °F, lows 1661 to 18 °C64 °F, about 97 mm3.8 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
- Spring (March–May) — highs 2171 to 27 °C81 °F, lows 1864 to 24 °C75 °F, about 162 mm6.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Summer (June–August) — highs 2984 to 30 °C86 °F, lows 2679 to 27 °C81 °F, about 229 mm9.0 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Autumn (September–November) — highs 2474 to 28 °C83 °F, lows 2170 to 26 °C79 °F, about 161 mm6.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Keelung compares
Compared with Taipei, about 23 km to the west, Keelung is on average 0.6 °C1 °F warmer and receives a similar amount of precipitation. The difference is largest in January (1.7 °C3.1 °F warmer).
Of the 12 places in Taiwan covered by World Climates, Keelung is the 9th warmest by annual mean temperature and the wettest by annual precipitation. See all of them on the Taiwan climate page.
Places in other countries with the most similar temperature and rainfall pattern: Uruma (Japan, Af), Okinawa (Japan, Cfa) and Naha (Japan, Am).
The same NASA POWER grid cell also contains Neihu (pop. 274,538) and Xizhi (pop. 204,619). Their long-term averages in this dataset are essentially the same as for Keelung, so they do not have separate pages.
Nearby places
- Taipei 23 km · 23 °C73 °F · 1,916 mm75 in
- Taoyuan 47 km · 22 °C72 °F · 1,916 mm75 in
- Hsinchu 86 km · 23 °C73 °F · 1,916 mm75 in
- Toufen 97 km · 24 °C75 °F · 1,677 mm66 in
- Taichung 153 km · 24 °C76 °F · 1,738 mm68 in
- Yuanlin 176 km · 25 °C76 °F · 1,738 mm68 in
- Chiayi City 226 km · 25 °C78 °F · 1,902 mm75 in
- Songcheng 261 km · 20 °C67 °F · 1,686 mm66 in
Frequently asked questions
What is the warmest month in Keelung?
July is the warmest month in Keelung, with an average high of 30 °C (86 °F) and an average low of 27 °C (81 °F).
What is the coldest month in Keelung?
January is the coldest month, with an average high of 19 °C (66 °F) and an average low of 16 °C (61 °F).
When does it rain the most in Keelung?
August is the wettest month with about 263 mm (10.3 in) of precipitation; February is the driest with about 92 mm (3.6 in).
What is the best time to visit Keelung?
Judging by long-term averages, the most comfortable months are November–February and April.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 101 m, while Keelung lies at about 19 m. Temperatures on this page were therefore adjusted by +0.5 °C1 °F using the standard lapse rate of 6.5 °C per 1,000 m.