Climate and monthly weather forecastHai Phong, Vietnam

The climate of Hai Phong

Hai Phong, a Vietnamese city, is chiefly dominated by a Humid subtropical climate. This climate, captured by the Köppen climate classification as Cwa, is characterized by a dry winter period. Throughout the year, the city experiences a range of distinctive weather conditions.

Rainfall levels dramaticaly fluctuate from month to month, accentuating seasonal changes. The least precipitation falls in December with 46mm (1.81"), while the busiest period is between August and September, with rainfall reaching a staggering 473mm (18.62") to 324mm (12.76"). A noticeable pattern emerges, with rainfall days following suit. This pattern ranges from a low of 2.6 days of rain in December to a peak of 15.3 days in August.

Temperature variability is another hallmark of Hai Phong's climate. Monthly highs stretch from 19.7°C (67.5°F) in January to July's peak of 32.1°C (89.8°F). On the cooler side, temperatures dip to a minimum of 14.2°C (57.6°F) in January, then gradually rise, reaching a zenith of 25.9°C (78.6°F) in July. This trend implies that Hai Phong's temperature regime is quite straightforward, with distinct hot and cold periods.

Humidity in Hai Phong aligns with the trends of many subtropical environments, presenting high levels throughout the year, with the lowest relative humidity in July and highest in April. Similarly, daylight hours follow an annual increasing and decreasing trend, with December being the shortest at 10.9 hours and June, the longest daylight period, clocking in at 13.4 hours.

The best time to visit Hai Phong

Given that periods of heavy rainfall might not be ideal for travellers, it can be argued that the best time to visit Hai Phong would be from December to February. During these months, the city experiences the least amount of rainfall, both in terms of volume and frequency. Concurrently, temperatures during this period are not extreme, falling in the comfortable range between 14.2°C (57.6°F) to 22.2°C (72°F), and the amount of daily sunshine is satisfactory.

The worst time to visit Hai Phong

In contrast, the worst time to visit Hai Phong could be from July to September. These months coinicide with the highest rainfall figures, with monthly totals peaking at 473mm (18.62") in August. Moreover, the number of rainfall days is also at its highest, with August presenting up to 15.3 days of rain. Combined with the highest average temperatures, which hover around 32.1°C (89.8°F), these months can be particularly uncomfortable for visitors.

Spring weather in Hai Phong

This period of March, April and May in Hai Phong is marked by rising temperatures. The temperatures increase from March's 17.6°C (63.7°F) to reach 24°C (75.2°F) in May. Rainfall during this period also increases, beginning at 80mm (3.15") in March and eventually reaching 241mm (9.49") in May. The advent of spring also comes with longer daylight hours, increasing from 12 hours in March to 13.1 hours in May.

Summer weather in Hai Phong

Summer in Hai Phong, spanning June through August, is characterized by hot temperatures and heavy rainfall. The temperatures during these months consistently stay above 25.7°C (78.3°F). June experiences a high of 32°C (89.6°F) while July and August retain a similar average high temperature of 32.1°C (89.8°F) and 31.5°C (88.7°F) respectively. These summer months are also the rainiest time of the year, with rainfall peaking in August.

Autumn weather in Hai Phong

Autumn in Hai Phong, occurring from September to November, sees a gradual decline in temperatures and reduction in rainfall. The average high temperature falls from 30.8°C (87.4°F) in September to 25.5°C (77.9°F) by November. Rainfall also drops from 324mm (12.76") in September to 53mm (2.09") in November.

Winter weather in Hai Phong

Winter in Hai Phong, lasting from December to February, is the least rainy and coolest part of the year. Temperatures during this time range from 19.7°C (67.5°F) in January to 22.1°C (71.8°F) in February. Furthermore, winter experiences the least amount of rainfall, with December and January averaging 46mm (1.81") and 37mm (1.46") respectively.

Weather in January

Despite its location in the tropical zone, Hai Phong, Vietnam experiences moderate temperatures in January. While rainfall is not excessive this month, the city witnesses higher relative humidity, which contributes to a sensation of coolness. Weather in January »

Weather in February

In contrast to January, February in Hai Phong witnesses higher temperatures and increased rainfall. The weather remains fairly humid, contributing to the warmth felt during the day. As the city transitions into March, weather patterns start showing signs of the impending summer with increased rainfall and higher relative humidity levels. Weather in February »

Weather in March

The arrival of March translates into the advent of summer in Hai Phong, with all weather indicators pointing upwards. The city witnesses increasingly warm days and nights, with an uptick in rainfall. Humidity levels remain on the higher side, adding to the overall warmth. Weather in March »

Weather in April

Heat is the defining characteristic of April in Hai Phong. Temperatures start to soar, rainfall increases, and the sun shines brighter than in the preceding months. The rising sea temperature corresponds well with the overall warmth, presenting an inviting environment for beach visits. Weather in April »

Weather in May

In May, Hai Phong is in the throes of summer. It's one of the hottest months, with temperatures commonly reaching their highest levels. The majority of the days bring about intensive sunlight and high UV rates. In addition to high temperatures, May also experiences increased rainfall, which does little to alleviate the overall heat. Weather in May »

Weather in June

The searing heat continues into June with little respite from the high humidity levels. Despite the intense sun and heat, coastal activities thrive thanks to the sea temperature reaching its yearly high. Hai Phong in June presents a unique blend of heat, humidity, and high rainfall. Weather in June »

Weather in July

July in Hai Phong is characterized by high temperatures, although slightly less intense than in June. Short bursts of rain become more frequent, providing relief from the summer heat. The increased length of the day allows more sunlight hours, making this month ideal for exploring the city and its surroundings. Weather in July »

Weather in August

August ushers in the wettest period of the year in Hai Phong. Despite the decrease in temperature from the peak in July, the weather remains hot and humid. In addition, the short bursts of rainfall seen in July become more frequent and intense, leading to higher relative humidity. Weather in August »

Weather in September

September experiences a drop in rainfall from the peak observed in August, signaling the onset of the dry season. The decline in rainfall is accompanied by a decrease in humidity. Notably, temperatures remain high, indicating the lingering effects of the summer heat. Weather in September »

Weather in October

October in Hai Phong marks the advent of autumn. This month experiences a noticeable drop in temperature, rainfall, and relative humidity, offering a mild and pleasant weather condition. Water activities remain amenable due to the still agreeable sea temperature. Weather in October »

Weather in November

November is characterized by cooler temperatures and decreased rainfall, making it a desirable time to visit Hai Phong. Despite the reduction in daylight hours, the weather remains fairly sunny, with comfortable humidity levels. Weather in November »

Weather in December

December brings with it the chilly winds of winter, notifying the end of the year in Hai Phong. With a noted decrease in temperature, sea temperature, and rainfall, this month is significantly cooler and drier. Despite the decrease in daylight hours, the UV index drops to a low of seven. Weather in December »