2011 Weather Summary (record, days, precipitation, storm)

[dunno what to put here]

January wasn't well below average, it was average.

Oh, and a below average summer in London is warmer the an average summer in Leeds.. lol, don't complain!

[B87]

January was below average very slightly at 7.4C/2.8C/ mean 5.1C. Average is 8.1C/2.3C/ mean 5.2C.

Highest temperature: 31.2C 27th June
Lowest temperature: -3.0C 8th March

[B87]

Highest and lowest temperature by month:

Jan: 14.0C/-2.0C
Feb: 14.4C/-2.2C
Mar: 18.8C/-3.0C
Apr: 27.4C/4.0C
May: 25.0C/4.0C
Jun: 31.2C/7.0C
Jul: 25.9C/9.5C
Aug: 30.1C/8.7C
Sep: 28.5C/7.4C
Oct: 28.8C/2.0C
Nov: 18.0C/0.0C
Dec: 13.2C/-2.0C

[Weatherfan2]

Originally Posted by dunno what to put here

January wasn't well below average, it was average.

He said January was below average, January 2011 CET = 3.7°C, 0.7°C below the 1981-2010 average, and 0.5°C below the 1971-2000 average.

But even here, Jan011 didn't bring any real snow (thank God).

[dunno what to put here]

Was more or less average here, everything you'd expect from a normal January, except it was dry.

[koyaanisqatsi1]

A very much-appreciated wetter and cloudier year

Sydney in 2011

For Observatory Hill, it is the first time since 2007 that the average of 1215mm has been exceeded.

Jan: 53mm
Feb: 18
Mar: 191 (highest since 2000; 248)
Apr: 206 (highest since 1999; 244)
May: 135
Jun: 93
Jul: 282 (highest since 1950: 336)
Aug: 52 (highest since 2007; 152)
Sep: 71 (highest since 2008; 99)
Oct: 37
Nov: 148 (highest since 2007; 170)
Dec: 78

Rose Bay, more representive of my area, measured 1392.6mm of rain (113% of average) - falling over 160 days - making it the highest total since 2007 (1512). The average (1979 – open) is 1227mm.

Highest daily fall: 107.2mm to 9am, 20th of March.

Jan: 73mm (highest since 2006; 129)
Feb: 9
Mar: 220 (highest since 2000; 238)
Apr: 177 (highest since 2007; 386)
May: 147
Jun: 71
Jul: 278 (highest on records from 1979)
Aug: 74 (highest since 2008; 77)
Sep: 73 (highest since 2008; 83)
Oct: 36
Nov: 145 (highest since 2007; 165)
Dec: 84

The airport site recorded 1251.4 millimetres of rain (115%) over 148 days making this the highest total since 1999 (1281). The average, from records spanning 83 years, is 1084mm.

Highest daily fall: 106.0mm to 9am, 20th of March.

Jan: 38mm (highest since 2008; 68)
Feb: 14
Mar: 183 (highest since 2000; 202)
Apr: 211 (highest since 2003; 244)
May: 97
Jun: 48
Jul: 250 (highest since 1950; 273 and the second highest total on record)
Aug: 40
Sep: 55
Oct: 47
Nov: 151
Dec: 113 (highest since 1992; 113)

The sunshine total of 2398.4 hours is the lowest since 1998 (2386.5) and 91% of average. Monthly percentages ranged from a low of 76 during March to 107 in May.

Jan: 236 hrs (100%)
Feb: 159 (79) (lowest since 2002; 146)
Mar: 162 (76) (lowest since 2000; 144)
Apr: 190 (92)
May: 205 (107)
Jun: 182 (102)
Jul: 203 (100)
Aug: 218 (90) (lowest total since 2007: 213)
Sep: 229 (97)
Oct: 207 (86)
Nov: 196 (86) (lowest since 2001; 186)
Dec: 206 (84) (lowest since 2003; 193)

[sulkiercupid]

We received bang on average rainfall in 2011 for the first time since 2005! Quite a rare feat these days. 2011 was our hottest year on record with a mean maximum of 25.7C/105F as well as the warmest min temps, interestingly only 1 very hot day (40C/104F+) whereas we usually have an average of 3, just consistently warm to hot. Second year in a row that we've beaten the annual average maximum temperature record. Also we had 27 consecutive days between early February to early March above 30C/86F which set another new record.

Perth in 2011

Annual

Mean Max: 25.7C / 78F
Mean Min: 14.0C / 57F
Rainfall: 860.8mm / 33.89"
Raindays: 104
Highest Max: 40.4C / 105F on 28 January
Lowest Max: 13.0C / 55F on 10 July
Highest Min: 26.1C / 79F on 27 January
Lowest Min: 1.3C / 34F on 4 July
Hot Days (32C+): 76
Mean/Total Sunshine Hours: 8.7 Hours / 3175 hours
Wettest Daily Total: 57mm on 24th June
Highest Wind Gust: 126 km/h (78 mph) @ Rottnest Island on 27 July

January

Mean Max: 32.5C / 90.5F
Mean Min: 19.5C / 67.1F
Extremes: 13.1C-40.4C (55F-105F)
Rainfall: 30.2mm / 1.19"
Raindays: 6

February

Mean Max: 34.2C / 94F
Mean Min: 21.0C / 70F
Extremes: 15.8C-39.0C (60F-102F)
Rainfall: 0.4mm / 0.02"
Raindays: 1

March

Mean Max: 31.9C / 89F
Mean Min: 18.6C / 65F
Extremes: 14.1C-36.4C (57F-98F)
Rainfall: Nil
Raindays: Nil


April

Mean Max: 27.3C / 81F
Mean Min: 14.8C / 59F
Extremes: 7.9C-35.7C (46F-96F)
Rainfall: 19.4mm / 0.76"
Raindays: 7

May

Mean Max: 23.2C / 74F
Mean Min: 11.0C / 52F
Extremes: 4.5C-30.0C (40F-86F)
Rainfall: 85mm / 3.35"
Raindays: 7

June

Mean Max: 19.5C / 68F
Mean Min: 10.0C / 50F
Extremes: 3.3C-24.3C (38F-78F)
Rainfall: 171.4mm / 6.75"
Raindays: 14

July

Mean Max: 18.3C / 65F
Mean Min: 8.5C / 47F
Extremes: 1.3C-22.0C (34F-72F)
Rainfall: 161mm / 6.34"
Raindays: 18

August

Mean Max: 20.2C / 68F
Mean Min: 9.1C / 48F
Extremes: 3.9C-26.3C (39F-79F)
Rainfall: 115.2mm / 4.53"
Raindays: 17

September

Mean Max: 20.5C / 68F
Mean Min: 9.4C / 48F
Extremes: 4.9C-24.5C (41F-76F)
Rainfall: 109.2mm / 4.30"
Raindays: 16

October

Mean Max: 24.5C / 76F
Mean Min: 13.0C / 55F
Extremes: 7.2C-36.3C (45F-97F)
Rainfall: 64.2mm / 2.53"
Raindays: 9

November

Mean Max: 25.9C / 79F
Mean Min: 14.9C / 59F
Extremes: 10.2C-37.2C (50F-99F)
Rainfall: 29mm / 1.14"
Raindays: 6

December

Mean Max: 30.5C / 87F
Mean Min: 18.2C / 65F
Extremes: 13.3C-39.9C (56F-104F)
Rainfall: 75.8mm / 2.98"
Raindays: 3

[koyaanisqatsi1]

In addition to the above post, daily sun data missing on 4 days - 1 each in April and June and two in November.

Jan: 333 hrs; 93%
Feb: 315; 101
Mar: 340; 114 (highest on record; old record 325 in 1955)
Apr: 272; 110 (highest on record at the current site but not enough to break the record of 280 hours set in 1920)
May: 224; 105
Jun: 163; 91
Jul: 165; 88
Aug: 250; 112
Sep: 222; 96
Oct: 267; 90
Nov: 281; 88
Dec: 315; 88 (lowest on record at the current site; all-time low is 247 in 1925)
Annual: 3153; 98

Regarding December's rainfalls, it's the highest total on record at many sites and, also the highest since 1951.

[sulkiercupid]

Worldwide 2011 weather summary.

Global summary of 2011 weather
State of the Climate | Global Analysis | Annual 2011


Main features:

-11th warmest on record
-2nd wettest on record after 2010

[Ariete]

I was collecting this year's monthly climate data from various cities in Finland and collected some of last year's stats as well, so I'll have something to compare with when the year's over. A "bit" late, but I thought I'll share them with you in case someone's interested. The stats are from the Helsinki Airport, 17 km from the coast and at a rural location, which makes them 'neutral'.



Sorry, no snow data, because the Finnish met institute only collects total precipitation.

Notes: February was much colder than usual, April and October somewhat warmer, June, July, November and December much warmer. Not a single day in August recorded a max of 25C, which is rare, and the max of 6.3C in March was pathetic.
The first half of the year and November very dry, December extremely wet. February was sunnier than normal, September gloomier.
The year's max of 31.4C was pretty average, but as it was recorded on June 10th, makes it highly unusual. As well was the December high of 9.3C recorded on the 27th. The Christmas was black, 4 of 10 are on average.

I'll post the stats from various locations when the year's over.