July weather forecast
Vila Viçosa, Portugal

July in Vila Viçosa, Portugal, is a hot summer month, with an average temperature varying between 33.1°C (91.6°F) and 16.7°C (62.1°F).

Temperature

The coming of July brings a minor shift in Vila Viçosa's weather, with average high-temperatures adjusting from June's warm 29.3°C (84.7°F) to a hot 33.1°C (91.6°F). July presents a sharp fall from Vila Viçosa's daytime highs to an average low-temperature of 16.7°C (62.1°F).

Heat index

In July, the heat index is appraised at a torrid 37°C (98.6°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In July, the average relative humidity is 51%.

Rainfall

July is the month with the least rainfall. Rain falls for 2.3 days and accumulates 2mm (0.08") of precipitation.

Daylight

The average length of the day in July in Vila Viçosa is 14h and 34min.
On the first day of the month, sunrise is at 06:08 and sunset at 20:58. On the last day of July, sunrise is at 06:30 and sunset at 20:41 WEST.

Sunshine

The months with the most sunshine in Vila Viçosa are July and August, with an average of 11.4h of sunshine.

UV index

In July, the average daily maximum UV index in Vila Viçosa is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In July, a daily UV index of 6 turns into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.