Paradise
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Paradise clear sky chart from 2005-11-06 to 2024-01-16.

This page is a summary of past forecasts. Even though it's based only on forecasts, some people use these pages as clue to a site's climate. But climate data based on actual observation should be preferred (if you can find it!).

Cloud, Transparency and Seeing forecasts are summarized individually. But because good observing conditions require a combination of minimum cloud cover, transparency and seeing, the individual forecast summaries can be difficult to interpret. The observing conditions section counts the combinations of conditions needed for common types of astronomical observation.

Observing Conditions

The following tables count the occurrence of the combinations of forecast and darkness conditions needed for different observations. Conditions are rated by by what percentage of the hours the observation would likely be attempted are usable.
Observation TypeMinimum conditions for hour to be usableOut of hours
Clear of CloudsTransparencySeeingSky Brightness
Planetary:50%(no limit)Average(no limit)Nighttime Hours
Deep Sky:70%Average(no limit)5.9Nighttime Hours
CCD Imaging:70%Below AveragePoor(no limit)Nighttime Hours

Percentages are of nighttime hours per month, or per year, when a particular observing conditions was met. Deep Sky percentages never exceed 50% because the moon is up half the time. Deep sky percentages are much lower for charts at high latitudes because of fewer dark hours in the summer.

Overall

PlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
Night
58%
23325
28%
74766
23%
23273
66%
23273
37%
40716

By Month

MonthDays of MonthPlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
January1st to 10thNight
43%
760
17%
2646
14%
756
50%
756
21%
1703
January11th to 20thNight
44%
744
21%
2471
16%
744
53%
744
24%
1549
January21st to endNight
44%
792
26%
2574
20%
792
54%
792
27%
1594
February1st to 10thNight
46%
720
26%
2340
20%
720
57%
720
29%
1371
February11th to 20thNight
47%
701
26%
2203
20%
700
58%
700
27%
1327
February21st to endNight
45%
592
25%
1776
19%
592
54%
592
27%
1117
March1st to 10thNight
38%
720
15%
2079
10%
720
45%
720
21%
1467
March11th to 20thNight
45%
720
22%
1980
15%
720
51%
720
28%
1299
March21st to endNight
41%
792
20%
2112
10%
792
48%
792
27%
1407
April1st to 10thNight
44%
720
22%
1800
9%
720
50%
720
30%
1197
April11th to 20thNight
51%
711
27%
1779
11%
711
58%
711
39%
1079
April21st to endNight
58%
720
26%
1800
10%
720
64%
720
46%
1022
May1st to 10thNight
54%
596
27%
1676
14%
596
63%
596
45%
901
May11th to 20thNight
62%
354
30%
1416
30%
354
69%
354
36%
666
May21st to endNight
62%
389
25%
1552
24%
388
71%
388
35%
729
June1st to 10thNight
65%
360
24%
1440
27%
360
74%
360
36%
676
June11th to 20thNight
70%
360
34%
1440
38%
360
80%
360
54%
532
June21st to endNight
76%
360
34%
1440
41%
360
85%
360
59%
499
July1st to 10thNight
85%
350
36%
1400
45%
350
91%
350
76%
428
July11th to 20thNight
86%
348
40%
1392
48%
348
92%
348
76%
420
July21st to endNight
85%
563
40%
1648
35%
532
89%
532
77%
627
August1st to 10thNight
84%
537
38%
1602
31%
534
87%
534
68%
672
August11th to 20thNight
87%
624
41%
1692
27%
624
89%
624
78%
726
August21st to endNight
88%
792
44%
1980
27%
792
90%
792
85%
875
September1st to 10thNight
84%
720
46%
1800
27%
720
89%
720
82%
798
September11th to 20thNight
79%
720
45%
1800
31%
720
83%
720
68%
880
September21st to endNight
73%
720
41%
2030
33%
720
81%
720
68%
884
October1st to 10thNight
68%
720
33%
2160
30%
720
76%
720
54%
1004
October11th to 20thNight
69%
720
39%
2160
37%
720
78%
720
53%
1024
October21st to endNight
63%
792
37%
2376
31%
792
74%
792
50%
1164
November1st to 10thNight
57%
740
28%
2362
24%
740
65%
740
33%
1354
November11th to 20thNight
53%
760
25%
2483
20%
760
62%
760
34%
1400
November21st to endNight
50%
760
27%
2660
23%
760
60%
760
32%
1444
December1st to 10thNight
48%
760
24%
2660
19%
760
57%
760
27%
1550
December11th to 20thNight
41%
760
19%
3233
17%
759
50%
759
16%
2237
December21st to endNight
36%
828
14%
4804
15%
817
46%
817
12%
3094

Individual Forecasts

The length of each colored bar in the "occurrence of each Forecast" column is proportional to the number of times the chart forecast that color. The percentages are of the total number of hours per month, or per year, with a particular forecast. The colors as the same as those used in clear sky charts.

Note: Transparency probabilities are only counted for those hours that have 30% or less cloud cover. Seeing probabilities are only counted for those hours that have 80% or less cloud cover. If that's too tricky, try Observing Conditions instead.

Overall

Occurrence of each ForecastData
Points
Cloud CoverDay
11%313323345%62%
74764
Night
14%413323345%58%
75059
TransparencyDay
25%47%18%24%21%
74477
Night
29%47%17%22%20%
74867
SeeingDay
13%9%24%32%17%4
13980
Night
14%5%18%33%26%4
23336

By Month

Percentage Cloud Cover SW (2006-)
Color Meanings:
Overcast 90% covered 80% covered 70% covered 60% covered 50% covered 40% covered 30% covered 20% covered 10% covered Clear
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
28%6%24423346%37%
1519
11th to 20thDay
22%6%14323346%47%
1612
21st to endDay
20%7%34323347%44%
1782
February1st to 10thDay
21%5%2432444448%
1620
11th to 20thDay
18%6%23323346%48%
1644
21st to endDay
21%6%1332335%6%46%
1480
March1st to 10thDay
23%7%36%424437%36%
1879
11th to 20thDay
25%6%24322347%41%
1980
21st to endDay
22%6%2432345%7%42%
2243
April1st to 10thDay
18%5%35%424448%43%
2160
11th to 20thDay
16%423223446%53%
2129
21st to endDay
9%42332345%8%58%
2160
May1st to 10thDay
8%5%23323347%62%
2279
11th to 20thDay
7%313423447%63%
2477
21st to endDay
7%3233245%5%7%59%
2723
June1st to 10thDay
7%32232345%8%61%
2520
11th to 20thDay
2112212345%77%
2520
21st to endDay
31111222384%
2520
July1st to 10thDay
11111122387%
2520
11th to 20thDay
11111112388%
2520
21st to endDay
111211222385%
2569
August1st to 10thDay
211111222382%
2328
11th to 20thDay
11111123387%
2206
21st to endDay
11111112390%
2376
September1st to 10thDay
1111122387%
2160
11th to 20thDay
3212212235%76%
2160
21st to endDay
4212211335%77%
1925
October1st to 10thDay
6%21332233372%
1800
11th to 20thDay
8%312313345%67%
1800
21st to endDay
11%323313346%62%
1980
November1st to 10thDay
16%41442435%7%50%
1716
11th to 20thDay
16%3134335%47%49%
1695
21st to endDay
15%5%2442335%5%53%
1520
December1st to 10thDay
22%5%13323345%49%
1520
11th to 20thDay
34%7%34423335%32%
1928
21st to endDay
23%7%25%434447%36%
2794
January1st to 10thNight
23%6%25%32345%7%40%
2646
11th to 20thNight
21%7%24423345%46%
2471
21st to endNight
20%6%14423445%46%
2574
February1st to 10thNight
20%423313347%50%
2340
11th to 20thNight
18%5%2442335%6%48%
2201
21st to endNight
20%6%23324345%47%
1776
March1st to 10thNight
25%9%25%424345%38%
2079
11th to 20thNight
22%7%1342335%8%42%
1980
21st to endNight
20%6%24423345%45%
2112
April1st to 10thNight
15%5%35%424447%46%
1800
11th to 20thNight
12%42331335%8%54%
1779
21st to endNight
9%313323347%62%
1800
May1st to 10thNight
8%5%1321345%5%62%
1676
11th to 20thNight
7%31342446%7%58%
1416
21st to endNight
6%42332445%5%62%
1552
June1st to 10thNight
6%32332345%7%61%
1440
11th to 20thNight
2112323235%76%
1440
21st to endNight
3122223381%
1440
July1st to 10thNight
1121111388%
1440
11th to 20thNight
11111222288%
1440
21st to endNight
11211222484%
1745
August1st to 10thNight
221221222381%
1611
11th to 20thNight
11111233383%
1692
21st to endNight
11111122388%
1980
September1st to 10thNight
21111212388%
1800
11th to 20thNight
421221124478%
1800
21st to endNight
3111212235%79%
2030
October1st to 10thNight
6%31221222474%
2160
11th to 20thNight
7%21221234471%
2160
21st to endNight
10%212212345%66%
2376
November1st to 10thNight
16%41332345%6%52%
2362
11th to 20thNight
14%42342345%8%52%
2483
21st to endNight
15%414323346%55%
2660
December1st to 10thNight
23%412323347%48%
2660
11th to 20thNight
36%5%2332335%7%32%
3276
21st to endNight
25%7%25%5%34446%36%
4862

Transparency (when cloud cover <= 30%)
Color Meanings:
Too cloudy to forecast Poor Below Average Average Above average Transparent
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
50%49%21%11%5%
1519
11th to 20thDay
41%37%17%17%15%
1612
21st to endDay
42%5%7%15%23%9%
1782
February1st to 10thDay
40%48%18%19%10%
1620
11th to 20thDay
38%48%19%24%8%
1653
21st to endDay
39%49%24%16%8%
1480
March1st to 10thDay
49%5%8%17%14%5%
1879
11th to 20thDay
44%410%20%15%6%
1980
21st to endDay
41%7%11%21%16%4
2243
April1st to 10thDay
40%6%12%21%18%4
2160
11th to 20thDay
32%6%11%22%21%8%
2132
21st to endDay
25%5%14%27%23%6%
2160
May1st to 10thDay
24%411%23%28%10%
2279
11th to 20thDay
22%5%10%28%26%10%
2480
21st to endDay
23%7%13%29%20%8%
2724
June1st to 10thDay
22%6%9%26%24%13%
2520
11th to 20thDay
10%5%9%19%34%23%
2520
21st to endDay
9%2315%35%37%
2520
July1st to 10thDay
6%2210%28%51%
2451
11th to 20thDay
6%1311%26%53%
2445
21st to endDay
7%137%26%56%
2426
August1st to 10thDay
9%2313%31%42%
2312
11th to 20thDay
5%1210%35%46%
2206
21st to endDay
41111%35%47%
2376
September1st to 10thDay
6%128%26%57%
2160
11th to 20thDay
12%35%20%35%24%
2160
21st to endDay
12%25%19%30%31%
1925
October1st to 10thDay
18%45%17%29%27%
1800
11th to 20thDay
20%5%5%17%25%29%
1800
21st to endDay
24%5%6%18%24%23%
1980
November1st to 10thDay
33%6%6%20%19%15%
1716
11th to 20thDay
35%6%11%21%18%10%
1695
21st to endDay
35%47%18%22%14%
1520
December1st to 10thDay
38%5%7%17%22%12%
1520
11th to 20thDay
58%36%14%14%6%
1928
21st to endDay
48%6%12%16%13%4
2794
January1st to 10thNight
45%5%10%21%13%6%
2646
11th to 20thNight
42%5%8%13%19%14%
2471
21st to endNight
41%48%15%22%11%
2574
February1st to 10thNight
36%47%19%20%13%
2340
11th to 20thNight
37%5%7%19%23%10%
2203
21st to endNight
40%5%7%22%19%8%
1776
March1st to 10thNight
50%5%8%14%17%6%
2079
11th to 20thNight
42%48%20%18%8%
1980
21st to endNight
42%5%9%22%17%5%
2112
April1st to 10thNight
38%6%11%19%19%7%
1800
11th to 20thNight
29%6%12%21%22%10%
1779
21st to endNight
24%5%13%27%26%6%
1800
May1st to 10thNight
23%5%11%19%31%11%
1676
11th to 20thNight
24%6%11%26%23%10%
1416
21st to endNight
23%6%13%26%24%8%
1552
June1st to 10thNight
22%8%10%27%23%11%
1440
11th to 20thNight
12%49%19%29%28%
1440
21st to endNight
11%2415%30%38%
1440
July1st to 10thNight
6%1213%26%52%
1400
11th to 20thNight
6%1311%21%58%
1392
21st to endNight
8%127%22%60%
1648
August1st to 10thNight
11%2213%29%44%
1602
11th to 20thNight
7%2410%32%46%
1692
21st to endNight
5%1311%30%50%
1980
September1st to 10thNight
6%127%28%56%
1800
11th to 20thNight
12%3418%37%26%
1800
21st to endNight
11%25%16%33%33%
2030
October1st to 10thNight
18%25%17%28%30%
2160
11th to 20thNight
18%35%18%26%31%
2160
21st to endNight
20%37%20%24%26%
2376
November1st to 10thNight
33%5%8%21%16%17%
2362
11th to 20thNight
31%6%11%21%20%11%
2483
21st to endNight
32%46%21%23%14%
2660
December1st to 10thNight
37%49%17%19%14%
2660
11th to 20thNight
53%36%13%18%7%
3276
21st to endNight
50%6%9%16%14%5%
4862

Seeing (when cloud cover <= 80%)
Color Meanings:
Too cloudy to forecast Bad 1/5 Poor 2/5 Average 3/5 Good 4/5 Excellent 5/5
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
47%319%19%11%1
180
11th to 20thDay
29%10%22%24%12%4
300
21st to endDay
23%6%23%27%16%4
374
February1st to 10thDay
24%12%21%27%14%1
340
11th to 20thDay
22%14%27%24%12%2
366
21st to endDay
21%14%30%24%11%
346
March1st to 10thDay
31%20%24%20%5%1
420
11th to 20thDay
30%13%26%17%13%2
420
21st to endDay
23%18%29%22%7%1
462
April1st to 10thDay
25%14%28%24%7%2
420
11th to 20thDay
21%18%28%22%10%1
412
21st to endDay
9%15%29%29%13%5%
420
May1st to 10thDay
11%16%31%27%13%3
423
11th to 20thDay
12%14%25%27%16%6%
448
21st to endDay
9%9%26%29%20%6%
485
June1st to 10thDay
7%14%23%31%19%6%
450
11th to 20thDay
5%11%30%34%16%4
450
21st to endDay
25%29%39%18%8%
450
July1st to 10thDay
2324%47%17%7%
446
11th to 20thDay
1222%43%26%6%
444
21st to endDay
1221%46%22%8%
487
August1st to 10thDay
2322%41%24%8%
447
11th to 20thDay
321%42%26%8%
437
21st to endDay
2319%45%26%4
495
September1st to 10thDay
1422%47%21%4
450
11th to 20thDay
5%7%23%37%25%3
450
21st to endDay
311%27%38%18%3
450
October1st to 10thDay
6%9%29%34%20%2
450
11th to 20thDay
8%8%20%35%23%6%
450
21st to endDay
15%7%22%31%20%5%
495
November1st to 10thDay
21%8%17%28%21%5%
312
11th to 20thDay
16%423%27%21%10%
263
21st to endDay
13%12%23%33%13%7%
180
December1st to 10thDay
31%422%23%13%7%
180
11th to 20thDay
28%7%24%23%11%7%
180
21st to endDay
24%12%21%25%15%4
198
January1st to 10thNight
25%6%20%33%14%2
760
11th to 20thNight
24%5%21%37%12%1
744
21st to endNight
22%5%22%31%18%2
792
February1st to 10thNight
22%5%21%34%17%2
720
11th to 20thNight
20%8%17%33%19%2
704
21st to endNight
23%7%21%36%11%2
592
March1st to 10thNight
29%8%17%27%16%3
720
11th to 20thNight
25%6%18%27%21%3
720
21st to endNight
24%7%23%29%16%1
792
April1st to 10thNight
18%8%23%31%18%2
720
11th to 20thNight
14%8%20%34%20%4
711
21st to endNight
11%7%20%35%23%4
720
May1st to 10thNight
9%8%25%30%25%3
596
11th to 20thNight
9%321%36%27%5%
354
21st to endNight
8%7%17%28%35%5%
389
June1st to 10thNight
7%417%34%34%5%
360
11th to 20thNight
2422%34%34%4
360
21st to endNight
4313%36%38%6%
360
July1st to 10thNight
111%33%50%5%
350
11th to 20thNight
1110%39%44%5%
348
21st to endNight
119%29%52%9%
563
August1st to 10thNight
318%30%51%7%
537
11th to 20thNight
119%38%43%8%
624
21st to endNight
119%36%47%6%
792
September1st to 10thNight
2111%38%42%6%
720
11th to 20thNight
4211%33%39%10%
720
21st to endNight
4318%35%31%9%
720
October1st to 10thNight
7%6%16%39%27%6%
720
11th to 20thNight
8%5%15%36%30%6%
720
21st to endNight
11%418%31%29%7%
792
November1st to 10thNight
17%5%16%30%27%5%
740
11th to 20thNight
15%423%36%19%3
760
21st to endNight
16%5%22%36%18%3
760
December1st to 10thNight
25%5%18%34%16%2
760
11th to 20thNight
29%5%18%31%14%2
760
21st to endNight
26%425%32%12%1
836
Page generated at 2024-01-13 16:28:31. Version ac07

Copyright 2024 Attilla Danko


Paradise Clear Sky Chart |Charts Home