Sa Pa Temperature by Month

The average annual maximum temperature in Sa Pa, Lao Cai, Vietnam is 25°C (77°F), with daytime highs ranging from 19°C (66°F) in January to 29°C (84°F) in June. This page covers monthly averages, day-night differences, and how Sa Pa compares to cities worldwide.

In Sa Pa, seasonal changes bring about a moderate variation in temperatures. Nighttime lows range from 22°C (72°F) in June to 10°C (50°F) in January.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. June, the warmest month, sees 95 hours of sunshine.

The chart below shows the average temperature throughout the year:

Sa Pa's average annual maximum temperature is 25°C (77°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.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

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 Sa Pa, January is the coolest month, with average highs of 19°C (66°F) and humidity around 86%, considered very high. In June, the warmest month, temperatures average 29°C (84°F) with 88% humidity, conditions that feel very 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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Sa Pa this rarely lasts long on the ground.

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