July is the zenith of summer in
Larissa, besieged with the highest observed temperatures and sunlit days. Amidst the Mediterranean warmth, rainfall slackens to one of the lowest averages, and humid conditions plummet further. The heatwave around mid-month results in the highest average temperature of 33.4°C (92.1°F), contrasted by a bearable low of 18.5°C (65.3°F) during the night. However, the sweltering weather is mitigated by the coastal breeze, making both nights and days pleasant for outdoor enjoyment.
Temperature
The average temperatures reach their apex in July, averaging 33.4°C (92.1°F) at the high end and 18.5°C (65.3°F) at the low end.
Heat index
July's average heat index is calculated to be a sweltering 36°C (96.8°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
With an average relative humidity of 46.4%, July is the least humid month.
Rainfall
In July, the rain falls for 2 days. Throughout July, 19mm (0.75") of precipitation is accumulated. Throughout the year, there are 56 rainfall days, and 413mm (16.26") of precipitation is accumulated.
Daylight
The average length of the day in July is 14h and 39min.
On the first day of the month, sunrise is at 06:06 and sunset at 21:02. On the last day of July, sunrise is at 06:29 and sunset at 20:44 EEST.
Sunshine
The month with the most sunshine is July, with an average of 10.9h of sunshine.
UV index
June and July, with an average maximum UV index of 9, are months with the highest UV index in Larissa. A UV Index value of 8 to 10 symbolizes a very high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 9 during July translates into the following guidance:
Be proactive in protecting yourself; skin and eyes can be harmed if left unprotected. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Even on overcast days, a sunscreen with a sun protection factor of no less than 30 should be generously applied and reapplied, particularly after swimming or outdoor activities.