Port Wentworth (GA) Temperature by Month
The average annual maximum temperature in Port Wentworth, Georgia, United States of America is 25°C (77°F), with daytime highs ranging from 16°C (61°F) in January to 33°C (91°F) in July. This page covers monthly averages, day-night differences, and how Port Wentworth compares to cities worldwide.
Port Wentworth Monthly Temperatures
Depending on the time of the year, temperatures range from very warm to mild in Port Wentworth. At night, minimum temperatures range from 23°C (73°F) in July to 4°C (39°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Port Wentworth by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 271 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Port Wentworth vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Port Wentworth vs World: Temperature Compared
Port Wentworth'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.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
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 Port Wentworth?
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 Wentworth, January is the coolest month, with average highs of 16°C (61°F) and humidity around 70% — considered high. In July, 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 Port Wentworth's weather — including monthly rainfall, sunshine hours, and humidity — visit our Port Wentworth climate page.
