July weather forecast
Casével, Portugal

July, the same as June, in Casével, Portugal, is another hot summer month, with an average temperature ranging between max 34°C (93.2°F) and min 17.7°C (63.9°F).

Temperature

Casével observes a slight ascent in average high-temperatures during July, adjusting from a tropical 30.3°C (86.5°F) in June to a still hot 34°C (93.2°F). Casével registers a substantial downturn from daytime peaks throughout July nights, with an average low-temperature of 17.7°C (63.9°F).

Heat index

July's mean heat index is calculated to be a sweltering 38°C (100.4°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The average relative humidity in July is 48%.

Rainfall

The months with the least rainfall are July and August Rain falls for 1.8 days and accumulates 1mm (0.04") of rain.

Daylight

The average length of the day in July is 14h and 29min.
On the first day of the month, sunrise is at 06:14 and sunset at 20:58. On the last day of July, sunrise is at 06:35 and sunset at 20:42 WEST.

Sunshine

The months with the most sunshine are July and August, with an average of 11.6h of sunshine.

UV index

July and August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 7 in July leads to these recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.