June weather forecastJoanna, Guyana
June
Weather in June
The first month of the summer, June, is also a moderately hot month in Joanna, Guyana, with temperature in the range of an average high of 28.8°C (83.8°F) and an average low of 25.1°C (77.2°F).Temperature
Welcoming June, Joanna notes an average high-temperature of a still warm 28.8°C (83.8°F), nearly consistent with May's 28.8°C (83.8°F). Night temperatures in June exhibit a subtle decrease, settling at an average of 25.1°C (77.2°F).Heat index
The average heat index in June is computed to be a sweltering 35°C (95°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
June is the most humid month, with an average relative humidity of 82%.Rainfall
June is the month with the most rainfall. Rain falls for 28.8 days and accumulates 314mm (12.36") of precipitation.Daylight
The month with the longest days is June, with an average of 12h and 30min of daylight.On the first day of June, sunrise is at 05:33 and sunset at 18:00. On the last day of the month, sunrise is at 05:38 and sunset at 18:07 -04.
Sunshine
In June, the average sunshine is 7.9h.UV index
January, February, April, June through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 7 during June translates into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Joanna, Guyana
- Average high temperature in June: 28.8°C
The warmest month (with the highest average high temperature) is September (30.8°C).
The months with the lowest average high temperature are January and February (28°C).
- Average low temperature in June: 25.1°C
The months with the highest average low temperature are September and October (25.9°C).
The coldest months (with the lowest average low temperature) are January, February and July (24.8°C).
Average pressure in June
Joanna, Guyana
- Average pressure in June: 1012.9mbar
The month with the highest atmospheric pressure is June (1012.9mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in June
Joanna, Guyana
- Average wind speed in June: 13km/h
The windiest month (with the highest average wind speed) is March (16.7km/h).
The calmest month (with the lowest average wind speed) is July (11.3km/h).
Average humidity in June
Joanna, Guyana
- Average humidity in June: 82%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is September (76%).
Average rainfall in June
Joanna, Guyana
- Average rainfall in June: 314mm
The wettest month (with the highest rainfall) is June (314mm).
The driest month (with the least rainfall) is March (97mm).
Average rainfall days in June
Joanna, Guyana
- Average rainfall days in June: 28.8 days
The month with the highest number of rainy days is July (29.9 days).
The month with the least rainy days is October (23.5 days).
Average daylight in June /
Average sunshine in June
Joanna, Guyana
- Average daylight in June: 12h and 30min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in June: 7h and 54min
The month with the most sunshine is September (Average sunshine: 9h and 18min).
The month with the least sunshine is April (Average sunshine: 7h and 0min).
Average sunshine days in June
Joanna, Guyana
- Average sunshine days in June: 0.4 days
The month with the most sunshine days is October (5 days).
The month with the least sunshine days is July (0.3 days).
Average UV index in June
Joanna, Guyana
- Average UV index in June: 7
The months with the highest UV index are January, February, April, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are March and May (UV index 6).
Average cloud cover in June
Joanna, Guyana
- Average cloud cover in June: 44
The months with the most cloud cover are February and April (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 24).
Average visibility in June
Joanna, Guyana
- Average visibility in June: 9km
The months with the highest visibility are January, February, March, April, September, October and December (10km).
The months with the lowest visibility are May, June, July, August and November (9km).





