An Hải Temperature by Month

An Hải in Vietnam sees moderate seasonal temperature shifts, with daytime highs between 25°C (77°F) in January and 33°C (91°F) in June, averaging 29°C (84°F) annually. Explore the full monthly breakdown below.

The climate in An Hải experiences moderate temperature changes, with mild shifts between seasons. At night, temperatures range from 28°C (82°F) in June to 21°C (70°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in An Hải by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. June, the city's warmest month, averages 240 hours of sunshine.

The chart below shows the average temperature throughout the year:

An Hải's average annual maximum temperature is 29°C (84°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In An Hải, January is the coolest month, with average highs of 25°C (77°F) and humidity around 84%, considered very high. In June, the warmest month, temperatures average 33°C (91°F) with 76% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on An Hải's weather, including monthly rainfall, sunshine hours, and humidity, visit our An Hải climate page.