August weather forecast
Viana do Alentejo, Portugal

August, the last month of the summer in Viana do Alentejo, is also a hot month, with temperature in the range of an average high of 33.7°C (92.7°F) and an average low of 16.9°C (62.4°F).

Temperature

August is the warmest month, exhibiting average temperatures of 33.7°C (92.7°F) at the peak and 16.9°C (62.4°F) at the base.

Heat index

August's average heat index is estimated at a sweltering 37°C (98.6°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The least humid month in Viana do Alentejo is August, with an average relative humidity of 49%.

Rainfall

In Viana do Alentejo, in August, it is raining for 2 days, with typically 3mm (0.12") of accumulated precipitation. Throughout the year, in Viana do Alentejo, Portugal, there are 95.6 rainfall days, and 308mm (12.13") of precipitation is accumulated.

Daylight

The average length of the day in August in Viana do Alentejo is 13h and 37min.
On the first day of August, sunrise is at 06:34 and sunset at 20:41. On the last day of the month, sunrise is at 07:01 and sunset at 20:03 WEST.

Sunshine

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

UV index

With an average maximum UV index of 7, August is the month with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 7 during August, leads to the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.