May weather forecast
Portobelillo, Panama

May, the last month of the spring in Portobelillo, is another hot month, with temperature in the range of an average high of 31.3°C (88.3°F) and an average low of 23.5°C (74.3°F).

Temperature

Portobelillo, Panama, experiences an average high-temperature of a still tropical 31.3°C (88.3°F) in May, marking an insignificant shift from 34°C (93.2°F) in April. Portobelillo witnesses an average low-temperature of 23.5°C (74.3°F) throughout the month of May.

Heat index

The average heat index in May is computed to be an extremely hot 43°C (109.4°F). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In May, the average relative humidity is 83%.

Rainfall

In Portobelillo, in May, it is raining for 29.3 days, with typically 288mm (11.34") of accumulated precipitation. Throughout the year, there are 269.3 rainfall days, and 2235mm (87.99") of precipitation is accumulated.

Daylight

In May, the average length of the day is 12h and 29min.
On the first day of May, sunrise is at 06:06 and sunset at 18:31. On the last day of the month, sunrise is at 06:03 and sunset at 18:36 EST.

Sunshine

The average sunshine in May is 7.4h.

UV index

January through June and September, 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 ordinary individuals.
Note: A daily maximum UV index of 7 in May translates into the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.