San Juan Temperature by Month
San Juan, Luzon, Philippines has a consistently comfortable climate year-round, with daytime highs averaging 29°C (84°F). Below you'll find a full monthly breakdown and a comparison with cities worldwide.
San Juan Monthly Temperatures
The temperature in San Juan remains steady throughout the year, providing a consistently very warm climate. Maximum daytime temperatures range from a very warm 31°C (88°F) in May to a comfortable 28°C (82°F) in January. Nights are mild year-round, with lows ranging from 25°C (77°F) in May to 23°C (73°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in San Juan by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: San Juan vs Philippines
The map below shows the annual temperature across Philippines. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
San Juan vs World: Temperature Compared
San Juan'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.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in San Juan?
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 San Juan, January is the coolest month, with average highs of 28°C (82°F) and humidity around 85% — considered very high. In May, the warmest month, temperatures average 31°C (88°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.
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 San Juan's weather — including monthly rainfall, sunshine hours, and humidity — visit our San Juan climate page.
