Panama · Latin America
Fort Sherman, Colón
Which days in December 2026 would work for a D-Day style landing here? Each day is rated
GO, MARGINAL or NO-GO on the things the 1944 planners needed: calm seas, moonlight for the airborne drop,
low tide at dawn and light winds.
Best day to land
Friday Dec 25
✓ GO79/100
🌖 99% moon ·
4.7 ft waves
Climate outlook
Next GO day
Wed Dec 23
Score 76 · Climate outlook
Days this month
5 ✓ GO17 ! MARGINAL9 ✕ NO-GO
Tides here
Small
About 1.1 ft a day, so tide timing is left out of the score here.
December 2026
✓ GO! MARGINAL✕ NO-GO
1
OUTLOOK
! MARGINAL 62
🌗 59%
🌊 4ft
2
OUTLOOK
! MARGINAL 54
🌗 48%
🌊 5ft
3
OUTLOOK
✕ NO-GO 50
🌘 38%
🌊 5ft
4
OUTLOOK
✕ NO-GO 49
🌘 28%
🌊 5ft
5
OUTLOOK
✕ NO-GO 49
🌘 19%
🌊 5ft
6
OUTLOOK
! MARGINAL 50
🌘 11%
🌊 5ft
7
OUTLOOK
! MARGINAL 51
🌘 5%
🌊 5ft
8
OUTLOOK
! MARGINAL 51
🌘 2%
🌊 5ft
9
OUTLOOK
! MARGINAL 51
🌑 0%
🌊 5ft
10
OUTLOOK
! MARGINAL 51
🌑 1%
🌊 5ft
11
OUTLOOK
! MARGINAL 51
🌒 4%
🌊 5ft
12
OUTLOOK
✕ NO-GO 50
🌒 9%
🌊 5ft
13
OUTLOOK
✕ NO-GO 49
🌒 16%
🌊 5ft
14
OUTLOOK
✕ NO-GO 48
🌒 24%
🌊 5ft
15
OUTLOOK
✕ NO-GO 47
🌒 34%
🌊 5ft
16
OUTLOOK
✕ NO-GO 47
🌓 44%
🌊 5ft
17
OUTLOOK
✕ NO-GO 48
🌓 54%
🌊 5ft
18
OUTLOOK
! MARGINAL 55
🌔 65%
🌊 5ft
19
OUTLOOK
! MARGINAL 64
🌔 75%
🌊 5ft
20
OUTLOOK
! MARGINAL 69
🌔 83%
🌊 5ft
21
OUTLOOK
! MARGINAL 72
🌔 90%
🌊 5ft
22
OUTLOOK
! MARGINAL 74
🌔 96%
🌊 5ft
23
OUTLOOK
✓ GO 76
🌔 99%
🌊 5ft
24
OUTLOOK
✓ GO 77
🌕 100%
🌊 5ft
25
OUTLOOK
✓ GO 79
🌖 99%
🌊 5ft
26
OUTLOOK
✓ GO 78
🌖 95%
🌊 5ft
27
OUTLOOK
✓ GO 77
🌖 90%
🌊 5ft
28
OUTLOOK
! MARGINAL 75
🌖 83%
🌊 4ft
29
OUTLOOK
! MARGINAL 72
🌖 74%
🌊 4ft
30
OUTLOOK
! MARGINAL 68
🌖 64%
🌊 4ft
31
OUTLOOK
! MARGINAL 60
🌗 54%
🌊 4ft
REC recorded weather for past days · FCST live forecast ·
OUTLOOK beyond the forecast: scored against the same week in past years, with this year's real moon and tides.
Select a day for the full breakdown.
Daily score
Dashed lines mark the GO (75) and MARGINAL (50) thresholds. Faded bars are past days.
0
50
75
100
Tue Dec 1: MARGINAL, 62/100 (Climate outlook)
1
Wed Dec 2: MARGINAL, 54/100 (Climate outlook)
Thu Dec 3: NO-GO, 50/100 (Climate outlook)
Fri Dec 4: NO-GO, 49/100 (Climate outlook)
Sat Dec 5: NO-GO, 49/100 (Climate outlook)
5
Sun Dec 6: MARGINAL, 50/100 (Climate outlook)
Mon Dec 7: MARGINAL, 51/100 (Climate outlook)
Tue Dec 8: MARGINAL, 51/100 (Climate outlook)
Wed Dec 9: MARGINAL, 51/100 (Climate outlook)
Thu Dec 10: MARGINAL, 51/100 (Climate outlook)
10
Fri Dec 11: MARGINAL, 51/100 (Climate outlook)
Sat Dec 12: NO-GO, 50/100 (Climate outlook)
Sun Dec 13: NO-GO, 49/100 (Climate outlook)
Mon Dec 14: NO-GO, 48/100 (Climate outlook)
Tue Dec 15: NO-GO, 47/100 (Climate outlook)
15
Wed Dec 16: NO-GO, 47/100 (Climate outlook)
Thu Dec 17: NO-GO, 48/100 (Climate outlook)
Fri Dec 18: MARGINAL, 55/100 (Climate outlook)
Sat Dec 19: MARGINAL, 64/100 (Climate outlook)
Sun Dec 20: MARGINAL, 69/100 (Climate outlook)
20
Mon Dec 21: MARGINAL, 72/100 (Climate outlook)
Tue Dec 22: MARGINAL, 74/100 (Climate outlook)
Wed Dec 23: GO, 76/100 (Climate outlook)
Thu Dec 24: GO, 77/100 (Climate outlook)
Fri Dec 25: GO, 79/100 (Climate outlook)
25
Sat Dec 26: GO, 78/100 (Climate outlook)
Sun Dec 27: GO, 77/100 (Climate outlook)
Mon Dec 28: MARGINAL, 75/100 (Climate outlook)
Tue Dec 29: MARGINAL, 72/100 (Climate outlook)
Wed Dec 30: MARGINAL, 68/100 (Climate outlook)
30
Thu Dec 31: MARGINAL, 60/100 (Climate outlook)
Best days to land in December 2026
ranked
1
Fri Dec 25Climate outlook · GO in 83% of past years
✓ GO79
🌖 99%
· 4.7 ft
· 12 mph
2
Sat Dec 26Climate outlook · GO in 80% of past years
✓ GO78
🌖 95%
· 4.6 ft
· 12 mph
3
Thu Dec 24Climate outlook · GO in 74% of past years
✓ GO77
🌕 100%
· 4.7 ft
· 14 mph
4
Sun Dec 27Climate outlook · GO in 66% of past years
✓ GO77
🌖 90%
· 4.6 ft
· 11 mph
5
Wed Dec 23Climate outlook · GO in 69% of past years
✓ GO76
🌔 99%
· 4.9 ft
· 14 mph
6
Mon Dec 28Climate outlook · GO in 43% of past years
! MARGINAL75
🌖 83%
· 4.5 ft
· 10 mph
7
Tue Dec 22Climate outlook · GO in 57% of past years
! MARGINAL74
🌔 96%
· 5.1 ft
· 14 mph
8
Tue Dec 29Climate outlook · GO in 11% of past years
! MARGINAL72
🌖 74%
· 4.5 ft
· 11 mph
9
Mon Dec 21Climate outlook · GO in 49% of past years
! MARGINAL72
🌔 90%
· 5.1 ft
· 14 mph
10
Sun Dec 20Climate outlook · GO in 20% of past years
! MARGINAL69
🌔 83%
· 5.1 ft
· 14 mph
All sites, December 2026
GO days left and each site's best
Data updated 2026-11-08 11:10 UTC · times shown are local to the site (America/Panama).