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Old 03-11-2012, 09:37 AM
 
Location: The western periphery of Terra Australis
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Here's something interesting:

Brisbane, 28'S of the equator:

Jan average: 25C
Jul average: 16C
Mean seasonal range: 9C

Perth, 31'S of the equator:

Feb average: 24C
Jul average: 13C
Mean seasonal range: 11C

Sydney, 33'S of the equator:

Jan average: 22C
Jul average: 12C
Mean seasonal range: 10C

Adelaide, 35'S of the equator:

Jan average: 22C
Jul average: 11C
Mean seasonal range: 11C

Melbourne, 37'S of the equator:

Feb average: 20C
Jul average: 10C
Mean seasonal range: 10C

Hobart, 43'S of the equator:

Jan average: 16C
Jul average: 8C
Mean seasonal range: 8C


Notice the trend? Every city has a seasonal range of about 10C! Hobart, the furthest from the equator, has the smallest range! TRUE it is on an island and somewhat more maritime than the others, but the others are still predominantly of a maritime type.

Now a quick comparison with North America:

Miami, FL
25'N:
Jan: 20C
Jul: 28C
Ann: 8C

Jacksonville, FL
30'N:
Jan: 11C
Jul: 27C
Ann: 16C

Raleigh, NC
36'N:
Jan: 4C
Jul: 26C
Ann: 22C

Boston, MA
42'N:
Jan: -2C
Jul: 22C
Ann: 24C


Obviously, it's no secret the Eastern US is far more continental, but what I find interesting how the Maritime effect pretty much cancels out the latitudinal range/temperature range correlation in the Southern Hemisphere.
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Old 03-11-2012, 11:38 AM
 
Location: In transition
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Another thing of interest to note is that as you go further north on the eastern seaboard into the Canadian maritime provinces, the seasonal range actually starts to slightly decrease due to being more exposed to maritime winds...

Halifax
-4 (January)
19 (August)

Seasonal range: 23

St. John's

February: -5 (February)
August: 16 (August)

Seasonal range: 21
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Old 03-11-2012, 01:13 PM
nei nei won $500 in our forum's Most Engaging Poster Contest - Thirteenth Edition (Jan-Feb 2015). 

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Location: NYC
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Quote:
Originally Posted by deneb78 View Post
Another thing of interest to note is that as you go further north on the eastern seaboard into the Canadian maritime provinces, the seasonal range actually starts to slightly decrease due to being more exposed to maritime winds...

Halifax
-4 (January)
19 (August)

Seasonal range: 23

St. John's

February: -5 (February)
August: 16 (August)

Seasonal range: 21
Might be a bit skewed since those places are either island (Newfoundland) or island-like jutting into the ocean (Nova Scotia).

Last edited by nei; 03-11-2012 at 06:13 PM..
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Old 03-11-2012, 04:35 PM
 
Location: Toronto
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Quote:
Originally Posted by Trimac20 View Post
Notice the trend? Every city has a seasonal range of about 10C! Hobart, the furthest from the equator, has the smallest range! TRUE it is on an island and somewhat more maritime than the others, but the others are still predominantly of a maritime type.

Now a quick comparison with North America:
The examples you give for Australia are on many coastal sides (east, west and south) while the American examples are eastern. I mean, I'm sure the trend of lack of seasonality shift wouldn't change that much for Australia if you took just one side and went down the coast, but if you compared it to western North America on the coast, then there'd be not much seasonality shift either.

Last edited by Stumbler.; 03-11-2012 at 04:45 PM..
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Old 03-11-2012, 05:48 PM
 
Location: Melbourne AUS
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yep in SoCal probably even less than most places along the southern coastlines of Australia.
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Old 03-11-2012, 06:12 PM
nei nei won $500 in our forum's Most Engaging Poster Contest - Thirteenth Edition (Jan-Feb 2015). 

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Location: NYC
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Eurkea, CA (40°N)

December (9.1°C)
August (15.0°C)

Seasonal Range 5.8°C

The warm season and cold season months are so similar that the coldest month being December is probably just a fluke from the set years used for averaging.

Los Angeles, CA (coastal site) 34°N

January (13.5°C)
August (21.1°C)

Seasonal Range 7.6°C
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Old 03-11-2012, 07:52 PM
 
Location: The western periphery of Terra Australis
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Quote:
Originally Posted by nei View Post
Eurkea, CA (40°N)

December (9.1°C)
August (15.0°C)

Seasonal Range 5.8°C

The warm season and cold season months are so similar that the coldest month being December is probably just a fluke from the set years used for averaging.

Los Angeles, CA (coastal site) 34°N

January (13.5°C)
August (21.1°C)

Seasonal Range 7.6°C
The few climates in the temperate zone where December is the coldest month I know of tend to very continental climates. I think El Paso, Texas might be an example? In much of England you'll find February is the coldest month.

It's common for August to be the warmest month in many maritime climates, especially on the west coasts.
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Old 03-11-2012, 08:27 PM
 
Location: In transition
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I think the more maritime the place is the more the higher latitude tends to cancel out seasonality.. take for example somewhere like Tórshavn, Faroe Islands which at 62°N is extremely maritime but only has a difference of about 8°C between it's warmest (August) and coldest (February) months.. this is the same seasonal range as somewhere like Miami...
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Old 03-11-2012, 08:40 PM
 
Location: The western periphery of Terra Australis
24,682 posts, read 48,337,911 times
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Quote:
Originally Posted by deneb78 View Post
I think the more maritime the place is the more the higher latitude tends to cancel out seasonality.. take for example somewhere like Tórshavn, Faroe Islands which at 62°N is extremely maritime but only has a difference of about 8°C between it's warmest (August) and coldest (February) months.. this is the same seasonal range as somewhere like Miami...
Yes, I think it largely depends on continentality. On the East coast of the US, I'm not sure where the range is the greatest, as I only went up to about 40-42'N. I believe the greatest range in the world is in Siberia.
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Old 03-12-2012, 12:31 AM
B87
 
Location: Surrey/London
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Some European Locations.

London
Jan mean: 5C
Jul mean: 19C
Difference: 14C

Scilly Isles
Jan mean: 8C
Aug mean: 17C
Difference: 9C

Paris
Jan mean: 4C
Jul mean: 20C
Difference: 16C

Dublin
Jan mean: 6C
Jul mean: 16C
Difference: 10C

Lisbon
Jan mean: 11C
Aug mean: 23C
Difference: 12C
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