Port Maria Temperature by Month
Port Maria in Saint Mary Parish, Jamaica enjoys a stable climate, with daytime temperatures staying close to 29°C (84°F) throughout the year. Explore the full monthly breakdown below.
Port Maria Monthly Temperatures
With minimal seasonal shifts, Port Maria experiences a constant climate year-round. Maximum daytime temperatures range from a very warm 31°C (88°F) in August to a comfortable 28°C (82°F) in February. At night, temperatures range from 25°C (77°F) in August to 22°C (72°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Port Maria by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 263 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Port Maria vs Jamaica
The map below shows the annual temperature across Jamaica. You can also select individual months if you want to compare a specific time of year.
very warm
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moderate
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Port Maria vs World: Temperature Compared
Port Maria'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:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
What Does the Temperature Feel Like in Port Maria?
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 Port Maria, February is the coolest month, with average highs of 28°C (82°F) and humidity around 73% — considered high. In August, the warmest month, temperatures average 31°C (88°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 Port Maria's weather — including monthly rainfall, sunshine hours, and humidity — visit our Port Maria climate page.
