Average weather for Blue Lagoon in September
It's warm in September in Blue Lagoon with an average temperature of 23°C. Temperatures this month range from a low of 20°C to a high of 26°C. At night, you can expect temperatures between 13°C and 16°C.
Start of September
The month of September starts in Blue Lagoon with warm temps, averaging around 24°C during the day and nights around 14°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid September
By mid-September, daytime temps stay steady at around 24°C, with nights around 15°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Blue Lagoon is around 24°C, while nighttime temps are about 15°C. A shower might pop up, but overall, the weather will be dry and sunny.
In September, there is an average of 69 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Blue Lagoon in September |
New York | ||
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23°C | 27°C | |
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26°C | 31°C | |
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20°C | -5°C | |
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69 mm | 57 mm | |
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10 days | 9 days |
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Blue Lagoon?
Looking for great weather? September is a good time to be in Blue Lagoon. The temperatures are nice, and there’s not too much rain.
Temperature records
With 38°C in 2022, Blue Lagoon reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 14°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 8°C to a highest value of 21°C.
Check out the climate of Blue Lagoon for all months and discover the best travel time
Curious about the weather in other parts of South Africa? Check out the climate and weather for spots like Cape Town, Krugerpark, Johannesburg, or explore other destinations in South Africa.
Daily Temperature in September in Blue Lagoon
This chart shows the average daily high and low temperatures in September for Blue Lagoon, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Blue Lagoon
The chart below shows the average daily precipitation in September for Blue Lagoon, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 10 days of precipitation in Blue Lagoon.
Daily UV index in September in Blue Lagoon
This chart shows the average daily UV index in September in Blue Lagoon, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Blue Lagoon over the years
This chart shows the average temperature in September in Blue Lagoon, measured in degrees Celsius, over the past few years.
Total precipitation in September in Blue Lagoon over the years
This chart shows the average precipitation in September in Blue Lagoon, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Blue Lagoon
Click on any day in September to get detailed info about the usual weather on that day in Blue Lagoon. Check out the historical temperatures and precipitation over the past 10 years on this day.






























Weather experiences in September in Blue Lagoon
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Average weather in Blue Lagoon by month
Click on a month below to see detailed weather info for Blue Lagoon. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Blue Lagoon for all months at once