Costa Nova Temperature by Month
Costa Nova in Centro Region, Portugal sees moderate seasonal temperature shifts, with daytime highs between 15°C (59°F) in January and 26°C (79°F) in August, averaging 20°C (68°F) annually. Explore the full monthly breakdown below.
Costa Nova Monthly Temperatures
Costa Nova sees moderate fluctuations in temperatures, making each season distinct yet not extreme. Nights are considerably cooler, with lows ranging from 17°C (63°F) in August to 8°C (46°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Costa Nova by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. August, the city's warmest month, averages 301 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Costa Nova vs Portugal
The map below shows the annual temperature across Portugal. You can also select individual months if you want to compare a specific time of year.
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Costa Nova vs World: Temperature Compared
Costa Nova's average annual maximum temperature is 20°C (68°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.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
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 Costa Nova?
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 Costa Nova, January is the coolest month, with average highs of 15°C (59°F) and humidity around 78% — considered high. In August, the warmest month, temperatures average 26°C (79°F) with 67% 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.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Costa Nova's weather — including monthly rainfall, sunshine hours, and humidity — visit our Costa Nova climate page.
