June weather forecast
Grand-Santi, French Guiana

The onset of June ushers in an onset of brighter weather conditions, with increasing daylight hours, indicative of summer’s arrival. Pressure levels rise marginally to 1012.9mb. Residents and visitors can expect potentially high UV exposure, with the UV index sitting at 6. The witnessing of slight decreases in rainfall amounts signifies drier weather patterns. One distinguishing factor for June is the rise in sunshine hours, reaching a commendable 7.1 hours per day, hinting at more sun-oriented activities.

Temperature

The shift into June reveals an average high-temperature of a still hot 30.4°C (86.7°F), closely mirroring May's climate. The average temperature during June nights dips to an agreeable 21.8°C (71.2°F).

Heat index

The average heat index in June is calculated to be a blistering 42°C (107.6°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Heat index evaluations are typically in the context of light winds and shaded environments. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In June, the average relative humidity in Grand-Santi, French Guiana, is 89%.

Rainfall

In June, the rain falls for 22.8 days. Throughout June, 94mm (3.7") of precipitation is accumulated. In Grand-Santi, during the entire year, the rain falls for 259.6 days and collects up to 915mm (36.02") of precipitation.

Daylight

June has the longest days of the year, with an average of 12h and 24min of daylight.
On the first day of June, sunrise is at 06:24 and sunset at 18:46. On the last day of the month, sunrise is at 06:30 and sunset at 18:52 -03.

Sunshine

The average sunshine in June in Grand-Santi is 7.1h.

UV index

The average daily maximum UV index in June is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in June translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely.