Lyon
France
45.73 ° N
4.93 ° E
650 ft
Cool temperate moist forest
Cfb Oceanic climate
+
DObk Temperate oceanic climate with warm summer with cool winter
Traditional Koppen classification: Cfb (Oceanic climate)

Official definition:
  • C – temperature of warmest month greater than or equal to 10 °C and temperature of coldest month less than 18 °C, but higher than -3 °C
  • f – precipitation is relatively evenly distributed throughout the year and do not fulfill classification criteria for s or w type
  • b - temperature of each of the four warmest months is higher than 10°C, but the temperature of the warmest month is less than 22 °C

The Cfb climate type is an oceanic type of climate with mild winter and evenly distributed precipitation. Average temperature of all months is less than 22 °C, which is what differentiates it from the Cfa type. Meanwhile at least four months have average temperature of 10 °C or more.

Just like precipitation, also temperatures tend to be relatively constant and differences between day and night are not very big. Precipitation throughout the year are frequent, but not very intense and sometimes even many wetdays in a row can occur. In the winter and in the autumn are common fogs and during the year also thunderstorms.

Winters are mild (temperatures only very rarely drops below 0 °C and if, then only very slightly) and summers nicely warm. Frontal activity causes lot of cloudiness and relatively high humidity in the autumn, winter and spring.

The total annual rainfall ranges usually between 500 and 2500 mm and in the winter it sometimes also snows.

Temperate oceanic climate Cfb can be found for example in the United Kingdom, Western part of France, Germany, on the West coast of Europe, Northern part of Spain, some parts of South America (Southern and Northern tips), in Southeast Australia and New Zealand.


Modern Trewartha classification: DObk (Temperate oceanic climate with warm summer with cool winter)

In the Trewartha classification, the category D is like in the Koppen classification, assigned to regions in the temperate zone. The criterion for this type of climate is four to seven months with average temperature of more than 10 °C. In general it is further subdivided into two subtypes: oceanic and continental. These differ in their average temperature of the coldest month.

Temperate climate is characterized by four distinct seasons and there are substantial differences between the temperatures in the summer and in the winter, but the absolute values are not so extreme and the change is gradual.

In case of the oceanic type, winter is milder than that of the continental type and the temperature of the coldest month usually above 0 °C. The weather conditions are to a large extent influenced by the nearby ocean, which causes smaller temperature variation between the individual seasons. Typical is Western wind and so we often find this type of climate on Western coasts of continents, such as for example in Western Europe or Western coast of the U.S., in latitudes between 40 and 60 ° in America and 40 and 65 ° in Europe. These regions tend to be densely inhabited.

  • warm summer: warmest month with average temperature between 18 and 23 °C
  • cool winter: coldest month with average temperature between 0 and 10 °C

Summary

53 °F
44 / 61

32.5 in
145 days

76 %

5 h 31 min/day


Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F) 30.032.037.043.048.055.059.057.054.045.039.032.0 44.0
Avg Temperature(°F) 36.038.046.052.058.065.070.068.064.053.045.037.0 53.0
Max Temperature (°F) 41.045.055.061.068.075.081.079.073.061.050.043.0 61.0
Range 11.013.018.018.020.020.022.022.019.016.011.011.0 17.0


Max month Min month Annual range
Min Temperature Jul Jan 29.0°F
Avg Temperature Jul Jan 34.0°F
Max Temperature Jul Jan 40.0°F
Temperature range Jul, Aug Jan, Nov, Dec 51.0°F
Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F)
Avg Temperature(°F)
Max Temperature(°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Min Temperature 48.0 37.0 42.67 11.0 59.0 55.0 57.00 4.0 54.0 39.0 46.00 15.0 32.0 30.0 31.33 2.0
Avg Temperature 58.0 46.0 52.00 12.0 70.0 65.0 67.67 5.0 64.0 45.0 54.00 19.0 38.0 36.0 37.00 2.0
Max Temperature 68.0 55.0 61.33 13.0 81.0 75.0 78.33 6.0 73.0 50.0 61.33 23.0 45.0 41.0 43.00 4.0

Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F) 36.038.046.052.058.065.070.068.064.053.045.037.0 53.0


Max month Min month Annual range
Avg Temperature Jul Jan 34.0°F
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Temperature 58.0 46.0 52.00 12.0 70.0 65.0 67.67 5.0 64.0 45.0 54.00 19.0 38.0 36.0 37.00 2.0


Humidity
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%) 87.082.074.069.069.068.064.067.076.083.086.087.0 53.0


Max month Min month Annual range
Avg Humidity Jan, Dec Jul 23.0%
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Humidity 74.0 69.0 70.67 5.0 68.0 64.0 66.33 4.0 86.0 76.0 81.67 10.0 87.0 82.0 85.33 5.0


Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 2.12.22.52.73.43.02.43.03.03.22.82.3 2.7 32.5
Wetdays 151211111311101111121414 12 145
Wetdays ratio (%) 48.4
15,16
42.9
12,16
35.5
11,20
36.7
11,19
41.9
13,18
36.7
11,19
32.3
10,21
35.5
11,20
36.7
11,19
38.7
12,19
46.7
14,16
45.2
14,17
39.7
39.726,60.274


Max month Min month Max Season Min Season Annual range
Average monthly precipitation May Jan Autumn Winter 1.3in
Wetdays Jan Jul Autumn Summer 5
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)
Wetdays / month


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 3.4 2.5 0.9 8.6 3.0 2.4 0.6 8.5 3.2 2.8 0.4 8.9 2.3 2.1 0.2 6.6
Wetdays 13 11 2 35 11 10 1 32 53 11 42 109 15 12 3 41

Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 2.12.22.52.73.43.02.43.03.03.22.82.3 2.7 32.5


Max month Min month Max Season Min Season Annual range
Average monthly precipitation May Jan Autumn Winter 1.3in
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 3.4 2.5 0.9 8.6 3.0 2.4 0.6 8.5 3.2 2.8 0.4 8.9 2.3 2.1 0.2 6.6


Sunlight / Day length
+

Max day length Min day length Sunlight/Day length
Jan 121 min
2 h 1 min
549 min
9 h 9 min
549,891
581 min
9 h 41 min
(31.1.)
581,859
524 min
8 h 44 min
(1.1.)
524,916
22.1 %
121,428
Feb 208 min
3 h 28 min
624 min
10 h 24 min
624,816
667 min
11 h 7 min
(29.2.)
667,773
584 min
9 h 44 min
(1.2.)
584,856
33.3 %
208,416
Mar 340 min
5 h 40 min
719 min
11 h 59 min
719,721
767 min
12 h 47 min
(31.3.)
767,673
671 min
11 h 11 min
(1.3.)
671,769
47.3 %
340,379
Apr 404 min
6 h 44 min
816 min
13 h 36 min
816,624
859 min
14 h 19 min
(30.4.)
859,581
771 min
12 h 51 min
(1.4.)
771,669
49.5 %
404,412
May 462 min
7 h 42 min
898 min
14 h 58 min
898,542
927 min
15 h 27 min
(31.5.)
927,513
862 min
14 h 22 min
(1.5.)
862,578
51.5 %
462,436
Jun 516 min
8 h 36 min
938 min
15 h 38 min
938,502
942 min
15 h 42 min
(20.6.)
942,498
929 min
15 h 29 min
(1.6.)
929,511
55.0 %
516,422
Jul 549 min
9 h 9 min
915 min
15 h 15 min
915,525
937 min
15 h 37 min
(1.7.)
937,503
885 min
14 h 45 min
(31.7.)
885,555
60.0 %
549,366
Aug 491 min
8 h 11 min
841 min
14 h 1 min
841,599
882 min
14 h 42 min
(1.8.)
882,558
796 min
13 h 16 min
(31.8.)
796,644
58.4 %
491,350
Sep 396 min
6 h 36 min
748 min
12 h 28 min
748,692
793 min
13 h 13 min
(1.9.)
793,647
701 min
11 h 41 min
(30.9.)
701,739
53.0 %
396,352
Oct 257 min
4 h 17 min
651 min
10 h 51 min
651,789
698 min
11 h 38 min
(1.10.)
698,742
606 min
10 h 6 min
(31.10.)
606,834
39.5 %
257,394
Nov 130 min
2 h 10 min
566 min
9 h 26 min
566,874
603 min
10 h 3 min
(1.11.)
603,837
536 min
8 h 56 min
(30.11.)
536,904
22.9 %
130,436
Dec 92 min
1 h 32 min
523 min
8 h 43 min
523,917
534 min
8 h 54 min
(1.12.)
534,906
519 min
8 h 39 min
(20.12.)
519,921
17.6 %
92,431
Year 358 min
5 h 58 min
733 min
12 h 13 min
733,707
942 min
15 h 42 min
(20. 6.)
942,498
519 min
8 h 39 min
(20. 12.)
519,921
48.9 %
358,374



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day
(min/day) 462 340 402 49.6%
402,409
549 491 519 57.8%
519,379
396 130 261 39.8%
261,394
208 92 140 24.9%
140,424
Day length 927 671 811 942 796 898 793 536 655 667 519 564

Day length
+

Max day length Min day length
Jan 549 min
9 h 9 min
549,891
581 min
9 h 41 min
(Array.1.)
581,859
524 min
8 h 44 min
(1.1.)
524,916
Feb 624 min
10 h 24 min
624,816
667 min
11 h 7 min
(Array.2.)
667,773
584 min
9 h 44 min
(1.2.)
584,856
Mar 719 min
11 h 59 min
719,721
767 min
12 h 47 min
(Array.3.)
767,673
671 min
11 h 11 min
(1.3.)
671,769
Apr 816 min
13 h 36 min
816,624
859 min
14 h 19 min
(Array.4.)
859,581
771 min
12 h 51 min
(1.4.)
771,669
May 898 min
14 h 58 min
898,542
927 min
15 h 27 min
(Array.5.)
927,513
862 min
14 h 22 min
(1.5.)
862,578
Jun 938 min
15 h 38 min
938,502
942 min
15 h 42 min
(Array.6.)
942,498
929 min
15 h 29 min
(1.6.)
929,511
Jul 915 min
15 h 15 min
915,525
937 min
15 h 37 min
(Array.7.)
937,503
885 min
14 h 45 min
(31.7.)
885,555
Aug 841 min
14 h 1 min
841,599
882 min
14 h 42 min
(Array.8.)
882,558
796 min
13 h 16 min
(31.8.)
796,644
Sep 748 min
12 h 28 min
748,692
793 min
13 h 13 min
(Array.9.)
793,647
701 min
11 h 41 min
(30.9.)
701,739
Oct 651 min
10 h 51 min
651,789
698 min
11 h 38 min
(Array.10.)
698,742
606 min
10 h 6 min
(31.10.)
606,834
Nov 566 min
9 h 26 min
566,874
603 min
10 h 3 min
(Array.11.)
603,837
536 min
8 h 56 min
(30.11.)
536,904
Dec 523 min
8 h 43 min
523,917
534 min
8 h 54 min
(Array.12.)
534,906
519 min
8 h 39 min
(20.12.)
519,921
Year 733 min
12 h 13 min
733,707
942 min
15 h 42 min
(21. 6.)
942,498
519 min
8 h 39 min
(21. 12.)
519,921



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Max Min Average Max Min Average Max Min Average
Day length 927 671 811 942 796 898 793 536 655 667 519 564

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