Porto-Novo Temperature by Month
The average annual maximum temperature in Porto-Novo, Benin is 30°C (86°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Porto-Novo compares to cities worldwide.
Porto-Novo Monthly Temperatures
The temperature in Porto-Novo remains steady throughout the year, providing a consistently very warm climate. Maximum daytime temperatures range from a very warm 32°C (90°F) in March to a comfortable 28°C (82°F) in August. Nights are mild year-round, with lows ranging from 26°C (79°F) in March to 24°C (75°F) in August.
The chart below illustrates the average maximum day and minimum night temperatures in Porto-Novo by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. March, the warmest month of the year, receives 223 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Porto-Novo Temperatures: 1976-2026
Browse day-by-day temperature records for Porto-Novo spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Porto-Novo vs Benin
The map below shows the annual temperature across Benin. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Porto-Novo vs World: Temperature Compared
Porto-Novo's average annual maximum temperature is 30°C (86°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
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 Porto-Novo?
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 Porto-Novo, August is the coolest month, with average highs of 28°C (82°F) and humidity around 85% — considered very high. In March, the warmest month, temperatures average 32°C (90°F) with 80% 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.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Porto-Novo's weather — including monthly rainfall, sunshine hours, and humidity — visit our Porto-Novo climate page.
