May weather forecastFirst Savannah, Guyana

May

Weather in May

The last month of the spring, May, is another hot month in First Savannah, Guyana, with an average temperature fluctuating between 30.5°C (86.9°F) and 23.1°C (73.6°F).

Temperature

The start of May sees the average high-temperature at a still tropical 30.5°C (86.9°F), showing little difference from April's 30.8°C (87.4°F). The temperature dips to an average of 23.1°C (73.6°F) during May nights.

Heat index

May's heat index is appraised at a blisteringly hot 40°C (104°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In May, the average relative humidity is 82%.

Rainfall

In First Savannah, in May, during 28.8 rainfall days, 148mm (5.83") of precipitation is typically accumulated. In First Savannah, during the entire year, the rain falls for 312.9 days and collects up to 1254mm (49.37") of precipitation.

Daylight

The average length of the day in May is 12h and 25min.
On the first day of May, sunrise is at 05:37 and sunset at 17:58. On the last day of the month, sunrise is at 05:34 and sunset at 18:03 -04.

Sunshine

In May, the average sunshine is 8.2h.

UV index

The months with the lowest UV index in First Savannah are January, February, May, June and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.

Updated: Feb 19, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature and low-temperature in First Savannah, Guyana, during May are 30.5°C (86.9°F) and 23.1°C (73.6°F) respectively. In May, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is appraised at 40°C (104°F).

In May, the average relative humidity in First Savannah, Guyana, is 82%.

In May, in First Savannah, the rain falls for 28.8 days. Throughout May, 148mm (5.83") of precipitation is accumulated.

The average day length in May in First Savannah, Guyana, is 12h and 25min.

In May, on the first day of the month, sunrise is at 05:37 and sunset at 17:58. On the last day of the month, in First Savannah, sunrise is at 05:34 and sunset at 18:03 -04.

The average sunshine duration in May in First Savannah is 8.2h.

The months with the lowest UV index are January, February, May, June and December, with an average maximum UV index of 6.

In First Savannah, Guyana, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

30.8°C

30.5°C

30.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8km/h

7.4km/h

6.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

1.2

0.7

0.8

Average UV index

Average cloud cover

Average visibility

Average temperature in May
First Savannah, Guyana

Average high temperature in May: 30.5°C

The warmest month (with the highest average high temperature) is September (33.1°C).
The month with the lowest average high temperature is January (29.3°C).

Average low temperature in May: 23.1°C

The month with the highest average low temperature is October (23.5°C).
The coldest month (with the lowest average low temperature) is January (21.8°C).

Average pressure in May
First Savannah, Guyana

Average pressure in May: 1012.6mbar

The month with the highest atmospheric pressure is June (1013.3mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

Average wind speed in May
First Savannah, Guyana

Average wind speed in May: 6.7km/h

The windiest month (with the highest average wind speed) is March (7.3km/h).
The calmest months (with the lowest average wind speed) are July and August (5.1km/h).

Average humidity in May
First Savannah, Guyana

Average humidity in May: 82%

The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are September and October (78%).

Average rainfall in May
First Savannah, Guyana

Average rainfall in May: 148mm

The wettest month (with the highest rainfall) is June (167mm).
The driest month (with the least rainfall) is September (55mm).

Average rainfall days in May
First Savannah, Guyana

Average rainfall days in May: 28.8 days

The month with the highest number of rainy days is December (29.1 days).
The month with the least rainy days is August (20.8 days).

Average daylight in May /
Average sunshine in May
First Savannah, Guyana

Average daylight in May: 12h and 24min

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 May: 8h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).

Average sunshine days in May
First Savannah, Guyana

Average sunshine days in May: 0.7 days

The month with the most sunshine days is August (8.5 days).
The month with the least sunshine days is December (0.3 days).

Average UV index in May
First Savannah, Guyana

Average UV index in May: 6

The months with the highest UV index are March, April, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, May, June and December (UV index 6).