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06-23-2008, 07:01 PM
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Location: Perth, Western Australia
9,595 posts, read 22,221,033 times
Reputation: 3451
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I just realized today that Toronto gets approximately 40 times as much sunlight energy in summer than in winter.
How did I get this?
Well Toronto's U.V. in mid-winter on the brightest day is only 0.9,
but in summer the U.V. is typically 8-9.
In winter we average 2-3 hours of sunlight a day,
But summer, with 40% average cloud cover and 15 hours of daylight,
roughly 8-9 hours of sunlight.
So Toronto gets ten times the U.V. and four times as much hours of sunlight in summer.
*Just for grins, would anyone else like to find and compare annual sunlight levels?
** Maybe all this "extra" sun energy is why I don't mind it being cooler than I'd prefer.   |
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06-23-2008, 08:30 PM
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Location: Subarctic maritime Melbourne
5,054 posts, read 5,298,638 times
Reputation: 2836
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Our winter UV is about 2, in summer it's 12 or 13.
average winter daily sunshine is about 4 hours 
average summer daily sunshine 8-9 hours. |
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06-23-2008, 08:55 PM
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Location: Seattle
6,043 posts, read 8,152,647 times
Reputation: 3052
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January - 2
February - 4
March - 5
April - 7
May - 8
June - 8
July - 10
August - 8
September - 7
October - 4
November - 3
December - 2
BBC - Weather Centre - World Weather - Average Conditions - Seattle
Last edited by Botev1912; 06-23-2008 at 09:19 PM..
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06-24-2008, 06:48 PM
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Location: Perth, Western Australia
9,595 posts, read 22,221,033 times
Reputation: 3451
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Quote:
Originally Posted by §AB
Our winter UV is about 2, in summer it's 12 or 13.
average winter daily sunshine is about 4 hours
average summer daily sunshine 8-9 hours. |
At least your sunshine hour get cut in half for winter.  
*No wonder many people get SAD here. 
*I don't get SAD, but it does seem bizarre the contrast between summer and winter for light levels... even fall to summer.
Daylight hours in winter is about 8 hours, summer is about 15.5 hours.
Based on this, clear skies are at least twice as common in summer versus winter. |
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04-03-2014, 12:12 AM
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Location: Sydney, Australia
9,962 posts, read 6,353,869 times
Reputation: 4887
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In summer we can get as high as 13-14.
In winter we hover around 3-4.
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04-03-2014, 01:04 AM
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Location: Wellington and North of South
4,966 posts, read 5,965,898 times
Reputation: 2354
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Quote:
Originally Posted by theropod
In summer we can get as high as 13-14.
In winter we hover around 3-4.
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Eh? At Sydney Aero June mean is 6.0, July 6.6 and August 7.8, with August being the relatively sunniest month of the year with 72% of the astronomically possible ... |
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04-03-2014, 01:13 AM
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Location: North West Northern Ireland.
20,695 posts, read 17,815,179 times
Reputation: 3107
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12 hours
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04-03-2014, 01:15 AM
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Location: North West Northern Ireland.
20,695 posts, read 17,815,179 times
Reputation: 3107
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Quote:
Originally Posted by §AB
Our winter UV is about 2, in summer it's 12 or 13.
average winter daily sunshine is about 4 hours
average summer daily sunshine 8-9 hours. |
Now please do not have the audacity to ever rant about winter daylight hours!
You do NOT have short or even winter days. I have just 7 hours of daylight in winter. Take that and smoke it. |
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04-03-2014, 06:34 AM
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3,578 posts, read 2,685,803 times
Reputation: 1593
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couldn't find any good data on this.
from SMHI:s homepage
"During summer, the UV index in Sweden is 4-7 and during the dark season (Nov-Feb) usually below 2"
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04-03-2014, 06:38 AM
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Location: Finland
24,268 posts, read 16,413,241 times
Reputation: 11103
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Quote:
Originally Posted by kronan123
couldn't find any good data on this.
from SMHI:s homepage
"During summer, the UV index in Sweden is 4-7 and during the dark season (Nov-Feb) usually below 2"
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Above some 52 degrees the lowest UV is in midwinter less than 0.5. UV 1 will reach Longyearbyen during these next days. |
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