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Coastal areas in southern England are mostly warmer in September than in June.
In somewhere like London, summery weather is normal for the first 10-15 days of September, but the temp decreases by about 4c as the month progresses. June is also much sunnier than September - even April is notably sunnier.
Average high on 1st June is 20c, up to 22c on 30th. 1st September has an average high of 22c, but by the 30th that has dropped to 18c.
September is sunnier than June in percent terms here.
Similar to much of NZ (particularly the North Island) where April is the same, or warmer than November -true seasonal lag.
My climate has February-March warmer than December-January, but April is 1C colder than November.
Yeah, I think by October the sun angle has lowered enough to finally combat the still warm SSTs and cut into some of the lag.
By December, the temperature mean is nearly identical to February here.
Quote:
Originally Posted by Joe90
Yep, true. Seasonal lag doesn't seem to be an Oceanic thing, as much a coastal thing -although Bologna shows there there are exceptions to that.
Looking at the temperature drop off in London during September, is it possible that London can Match Chicago in that cool off, relative to annual range?
March here is sunnier than December, which is reflected by March having warmer highs, but colder lows than December
Though, November-December is colder than February-March in Bologna.
Seems to be a rather popular pattern for inland continental climates to have a seasonal lead in late fall/winter and a seasonal lag in late spring/summer.
Yes,especially Canada are off the charts compared to longtime averages.
I don't understand how the United States and Canada still get so much heat this late,while the avgs say it's usually much colder there.
Most of Northern,Western and Central Europe drop off the warmth radar next week,and it will be a long time till we will see any warmth.
The climate isn't changing in Europe's favor,i think we will get colder and colder while you get warmer and warmer.
Seems to be a rather popular pattern for inland continental climates to have a seasonal lead in late fall/winter and a seasonal lag in late spring/summer.
That's the case in many oceanic and some mediterranean climates too. Places like Seattle, Sacramento, Paris, etc. In western North America, the effect is particularly pronounced.
Yes,especially Canada are off the charts compared to longtime averages.
I don't understand how the United States and Canada still get so much heat this late,while the avgs say it's usually much colder there.
Most of Northern,Western and Central Europe drop off the warmth radar next week,and it will be a long time till we will see any warmth.
The climate isn't changing in Europe's favor,i think we will get colder and colder while you get warmer and warmer.
Yes,especially Canada are off the charts compared to longtime averages.
I don't understand how the United States and Canada still get so much heat this late,while the avgs say it's usually much colder there.
Most of Northern,Western and Central Europe drop off the warmth radar next week,and it will be a long time till we will see any warmth.
The climate isn't changing in Europe's favor,i think we will get colder and colder while you get warmer and warmer.
Well let's see what the last 6 years look like shall we?
September has an average high of 21C so far, but it will inevitably continue to fall. Still looking like a warm month overall though - possibly warmer than June.
Yep, strong seasonal lag is only a feature of some Oceanic climates. Somewhere like London or Glasgow are poor examples, relative to annual range. Bologna has a more pronounced one,relative to it's annual range.
that said I don't find it particularly pronounced, the first half of september is basically still summer here, then the temp decreases pretty fast. The highs lose 7c between September and october, and 7 more between October and November. Now it is still short sleeves weather pretty much, within two months I'll most certainly have to wear a coat or at least a heavy jacket.
Also, october is cooler than may by 3c. The main difference in the fall is the shorter days, the lower diurnal range, the higher relative humidity and the increasing cloud cover.
The reason continental climates in the northern US already have freezes by october is also because their winters are much colder to begin with.
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