September weather forecast
Alkmaar, Suriname

September in Alkmaar continues the trend of high temperatures from August, but with a slight dip. The rainfall is the least for the year, coming down to 34mm (1.34"), offering residents a relatively dry month before the onset of the wetter season. The decrease in rainfall also means a decrease in cloud coverage, leading to clear skies and maximum visibility. In comparison to the preceding and following months, September stands out with its uniquely dry weather.

Temperature

With the advent of September, Alkmaar experiences an average high-temperature of a still tropical 31.5°C (88.7°F), mirroring a close resemblance to the previous month. In Alkmaar, September nights witness a steady temperature drop to a moderately hot 24.6°C (76.3°F).

Heat index

The heat index for September is appraised at a blistering 41°C (105.8°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 77%.

Rainfall

September is the month with the least rainfall. Rain falls for 13.5 days and accumulates 34mm (1.34") of precipitation.

Daylight

The average length of the day in September is 12h and 9min.
On the first day of September, sunrise is at 06:33 and sunset at 18:46. On the last day of the month, sunrise is at 06:27 and sunset at 18:31 -03.

Sunshine

The month with the most sunshine is September, with an average of 9.6h of sunshine.

UV index

The months with the highest UV index in Alkmaar are February, March, June through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, an average UV index of 7 transforms into the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.