May weather forecast
Roura, French Guiana

May bridges the transition from the more rain-intensive weather of April to the dry spell ahead in June. Though it achieves the highest relative humidity standing at 86%, it does not pose any drastic shift from the usual. Moreover, the atmospheric pressure remains close to the year-round average, providing fairly constant weather conditions. Sunshine hours witness a minor hike for residents looking to soak up some sun. Nevertheless, a noticeable dip in rain volumes is on the horizon for the month of June.

Temperature

Roura's May average high-temperature settles at a still warm 28.6°C (83.5°F), showing a near match with the preceding month. A slight dip in temperature to a still warm 24.7°C (76.5°F) marks the average nights in Roura during May.

Heat index

The heat index value for May is calculated to be a sweltering 35°C (95°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. 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 are primarily vital for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

With an average relative humidity of 86%, May is the most humid month.

Rainfall

The month with the most rainfall is May, when the rain falls for 28.9 days and typically aggregates up to 293mm (11.54") of precipitation.

Daylight

In May, the average length of the day is 12h and 20min.
On the first day of May, sunrise is at 06:17 and sunset at 18:35. On the last day of the month, sunrise is at 06:15 and sunset at 18:38 -03.

Sunshine

The average sunshine in May in Roura is 6.9h.

UV index

The months with the lowest UV index are January through May and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 6 during May, leads to the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.