Climate and monthly weather forecast
Keelung City, Taiwan

Keelung City is positioned in the Köppen climate classification as Cfa, otherwise known as humid subtropical climate, indicating the absence of a dry season. Due to its geographical location on the northern tip of Taiwan, this city experiences specific climatic conditions throughout each month of the year. Interpreting these conditions demands recognizing variations in weather parameters such as sea temperature and daylight hours.

A notable weather pattern emerges from the sea temperature, exhibiting a continuous rise from a comfortable 20.3°C (68.5°F) in February all the way to a peak of 28.6°C (83.5°F) in August, following which, a steady decrease is witnessed towards the end of the year, bottoming out at 20.9°C (69.6°F) in January. Consequently, water enthusiasts can relish warmer seas during the mid-year months extending from May until October, where the temperatures stay comfortably above the 23°C (73.4°F) mark.

Moreover, the daylight hours expand from a minimum of 10.6 hours in December, reaching a pinnacle of 13.7 hours in June, post which a steady decrement is observed, a pattern that mirrors the rise and fall of sea temperatures. Thus, tourists visiting during the period of longer daylight hours, that stretch from March and iextend right up until September, can relish extended periods of natural light to explore the city.

The marriage of these two parameters thus underlines a distinct weather pattern throughout the year in Keelung City, Taiwan, with the maximum sea temperature as well as daylight hours both peaking around mid-year, and descending towards the year-end.

Judging by the aforementioned climatic patterns, the best time to visit Keelung City would be between May and October. During these months, the sea temperature comfortably settles between 23.8°C (74.8°F) during May and a peak of 28.6°C (83.5°F) in August, following which it gradually descends to 26.2°C (79.2°F) in October. This is coupled with maximum daylight hours, ranging from 13.4 hours in May to 13 hours in October, offering extended exploring times for tourists. This perfect combination of warm sea temperatures and extended daylight hours make this stretch of months ideal for water activities and city explorations.

In contrast, visitors might find the months between November and April less welcoming. During this period, the city experiences the lowest sea temperatures, falling from 24.3°C (75.7°F) in November gradually down to 20.9°C (69.6°F) in January, and then slightly rising to 21.1°C (70°F) in April. Accompanying this is the reduced daylight, shrinking from the 10.9 hours in November to 10.6 hours by December and January, albeit slightly augmenting to 11.3 hours by February. This restricted blend of colder sea temperatures and limited daylight can curb outdoor exploration activities, hence making it the least favorable time to visit Keelung City.

During the spring season spanning from March to May, Keelung City experiences a rise in its sea temperature from 21.1°C (70°F) in March steadily up to 23.8°C (74.8°F) by May. Over the same duration, the daylight hours also tap into the spring spirit, growing from 12 hours in March to an extended 13.4 hours in May. This upward surge of temperature and natural light mark a transition into the city's favorable visiting period.

Summer in Keelung City extends from June to August, and the city witnesses its highest sea temperatures during these periods. Starting at 27.4°C (81.3°F) in June, temperatures rise to 28.3°C (82.9°F) by July, hitting a peak of 28.6°C (83.5°F) in August. Daylight hours also find their zenith during these months, with 13.7 hours in June gradually decreasing to 13.5 hours by July and ending at 13 hours during August. This season, with the warmest seas and longest days, marks the best time for outdoor activities in Keelung City.

Autumn in Keelung City, ranging from September to November, shows a gradual decline in its sea temperatures commencing at 27.7°C (81.9°F) in September and dwindling down to 24.3°C (75.7°F) by November. The daylight hours during these months decrease from 12.3 hours in September to just 10.9 hours in November. The descending trend in sea temperatures and daylight hours indicate the end of the city's ideal tourism period.

Winter in Keelung City is marked by the period from December moving into February, during which both sea temperatures and daylight hours reach their lowest values. The dip in sea temperatures starts at a chilly 22.3°C (72.1°F) in December, sinks further to 20.9°C (69.6°F) by January and shows a slight rise to 20.3°C (68.5°F) during February. Concomitantly, daylight hours also shrink from 10.6 hours in December and January to a slight increment of 11.3 hours in February. This seasonal dip forms the least favorable visiting period for the city.

The start of the year in Keelung City, Taiwan introduces one of the colder periods. January sees a subtle decrease in sea temperature compared to December, reaching 20.3°C (68.5°F). Residents anticipate the colder weather as well as a mild increase in daylight hours. Weather in January »

February signals a transition in the local climate of Keelung City. The sea temperature undergoes a slight increase to 21.1°C (70°F) in February. Days slowly lengthens as spring approaches. The increment is a welcoming break from the colder winter months as it leads into the warmer season. Weather in February »

With the arrival of spring, the city of Keelung sees warmer weather. The sea temperature spikes to 23.8°C (74.8°F), a significant jump from February. March historically stands out as a month of transition with notable changes in the atmosphere. Weather in March »

The warmer trend continues through the month of April, building towards the peak of summer. The sea temperature rises even further in April, reaching 25.9°C (78.6°F), indicating a significant shift in climate. This period is characterized by longer days to savor the warmth and enjoy outdoor activities. Weather in April »

Keelung City enters the summer season with higher temperatures and longer daylight. In May, the sea temperature touches 27.4°C (81.3°F), denoting the highest rise in temperature so far. The days are undoubtedly sizzling, coupled with increased daylight hours offering more room for sun-touched activities. Weather in May »

June in Keelung City retains the summertime heat with prolonged hours of daylight. The sea temperature escalates to the monthly peak of 28.3°C (82.9°F). This increase ensures warm weather and continued long days, making this a favorable time for outdoor pursuits. Weather in June »

Water bodies play an essential role in tempering the summer heat in July. A slight increase in sea temperature from 28.3°C (82.9°F) to 28.6°C (83.5°F) is observed. The high sea temperature blends with a gradual shortening of daylight. Weather in July »

Keelung City experiences a moderate decline in August, marking the end of peak summer. Though slightly less, the sea temperature remains high at 27.7°C (81.9°F) in August. The decreased temperature comes with the reduction in daylight hours, subtly indicating the shift towards fall. Weather in August »

The waning summer heat in September quietly prepares Keelung City for the fall. A noted decrease in sea temperature to 26.2°C (79.2°F) becomes apparent this month. Following August, shorter daylight hours hint at the upcoming fall season. Weather in September »

October welcomes the fall season with cooler weather and gradually shortening days. A comparatively considerable drop to 24.3°C (75.7°F) in sea temperature indicates the onset of the fall season. October speaks of changing leaves and cooler winds transforming the city's climate and scenery. Weather in October »

The late fall in Keelung City brings cooler weather, fewer hours of daylight, and an occasional shower. Notably, November sea temperatures drop to 22.3°C (72.1°F), paving the way for the upcoming winter. The dropping temperature and diminishing daylight outline the closing fall season. Weather in November »

Winter makes its presence felt as December enters Keelung City with chilly weather and shorter daylight hours. The sea experiences the coldest temperatures for the year, down to 20.9°C (69.6°F). The city embraces the cold wave as daylight keeps reducing, making way for more extended nights. Weather in December »