Castelo do Neiva Temperature by Month

Castelo do Neiva in Norte Region, Portugal sees moderate seasonal temperature shifts, with daytime highs between 14°C (57°F) in January and 24°C (75°F) in August, averaging 19°C (66°F) annually. Explore the full monthly breakdown below.

The climate in Castelo do Neiva experiences moderate temperature changes, with mild shifts between seasons. At night, temperatures range 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 Castelo do Neiva 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 295 hours of sunshine.

The chart below shows the average temperature throughout the year:

Castelo do Neiva's average annual maximum temperature is 19°C (66°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.

Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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 Castelo do Neiva, January is the coolest month, with average highs of 14°C (57°F) and humidity around 81%, considered very high. In August, the warmest month, temperatures average 24°C (75°F) with 73% 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 Castelo do Neiva's weather, including monthly rainfall, sunshine hours, and humidity, visit our Castelo do Neiva climate page.