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In December 2026, the highest tide in San Juan is on December 24 at 9:03 AM (2.0 ft) and the lowest on December 24 at 1:34 AM (−0.4 ft). The biggest range of the month, 2.4 ft, is on December 24; the smallest, 1.0 ft, on December 17.
Which days in December have the biggest tides in San Juan?
Range of each day, coloured by spring and neap tides
Calendar
High and low tides in San Juan, December 2026
🖨 Print or PDF| Day | High ▲ and low ▼ tide | Range | Moon | Sun |
|---|---|---|---|---|
| ▲2:15 AM 1.1 ft▼8:00 AM 0.3 ft▲2:38 PM 1.4 ft▼9:08 PM 0.2 ft | 1.2 | 6:41 AM · 5:48 PM | ||
| ▲3:28 AM 1.3 ft▼9:22 AM 0.4 ft▲3:30 PM 1.3 ft▼9:51 PM 0.2 ft | 1.0 | 6:42 AM · 5:48 PM | ||
| ▲4:34 AM 1.4 ft▼10:43 AM 0.5 ft▲4:20 PM 1.1 ft▼10:33 PM 0.1 ft | 1.3 | 6:43 AM · 5:48 PM | ||
| ▲5:34 AM 1.5 ft▼11:58 AM 0.5 ft▲5:08 PM 1.0 ft▼11:14 PM 0.0 ft | 1.5 | 6:43 AM · 5:48 PM | ||
| ▲6:28 AM 1.6 ft▼1:04 PM 0.5 ft▲5:53 PM 0.9 ft▼11:55 PM 0.0 ft | 1.6 | 6:44 AM · 5:48 PM | ||
| ▲7:17 AM 1.7 ft▼2:02 PM 0.4 ft▲6:35 PM 0.8 ft | 1.2 | 6:44 AM · 5:49 PM | ||
| ▼12:35 AM −0.1 ft▲8:03 AM 1.7 ft▼2:53 PM 0.4 ft▲7:16 PM 0.7 ft | 1.8 | 6:45 AM · 5:49 PM | ||
| ▼1:13 AM −0.1 ft▲8:45 AM 1.7 ft▼3:38 PM 0.4 ft▲7:53 PM 0.7 ft | 1.8 | 6:46 AM · 5:49 PM | ||
| ▼1:51 AM −0.1 ft▲9:24 AM 1.7 ft▼4:19 PM 0.4 ft▲8:30 PM 0.7 ft | 1.8 | 6:46 AM · 5:49 PM | ||
| ▼2:27 AM −0.1 ft▲10:00 AM 1.7 ft▼4:56 PM 0.4 ft▲9:06 PM 0.7 ft | 1.7 | 6:47 AM · 5:50 PM | ||
| ▼3:03 AM 0.0 ft▲10:34 AM 1.6 ft▼5:29 PM 0.4 ft▲9:45 PM 0.7 ft | 1.6 | 6:47 AM · 5:50 PM | ||
| ▼3:39 AM 0.0 ft▲11:06 AM 1.6 ft▼6:01 PM 0.4 ft▲10:28 PM 0.7 ft | 1.5 | 6:48 AM · 5:50 PM | ||
| ▼4:19 AM 0.1 ft▲11:39 AM 1.5 ft▼6:31 PM 0.4 ft▲11:17 PM 0.8 ft | 1.4 | 6:48 AM · 5:51 PM | ||
| ▼5:02 AM 0.2 ft▲12:12 PM 1.5 ft▼7:01 PM 0.4 ft | 1.2 | 6:49 AM · 5:51 PM | ||
| ▲12:13 AM 0.9 ft▼5:53 AM 0.3 ft▲12:47 PM 1.4 ft▼7:33 PM 0.4 ft | 1.1 | 6:50 AM · 5:51 PM | ||
| ▲1:15 AM 1.0 ft▼6:52 AM 0.4 ft▲1:24 PM 1.3 ft▼8:06 PM 0.3 ft | 1.0 | 6:50 AM · 5:52 PM | ||
| ▲2:20 AM 1.1 ft▼8:00 AM 0.5 ft▲2:04 PM 1.2 ft▼8:43 PM 0.2 ft | 1.0 | 6:51 AM · 5:52 PM | ||
| ▲3:25 AM 1.2 ft▼9:17 AM 0.6 ft▲2:46 PM 1.1 ft▼9:23 PM 0.1 ft | 1.1 | 6:51 AM · 5:53 PM | ||
| ▲4:28 AM 1.4 ft▼10:36 AM 0.6 ft▲3:33 PM 1.0 ft▼10:07 PM 0.0 ft | 1.4 | 6:52 AM · 5:53 PM | ||
| ▲5:27 AM 1.6 ft▼11:52 AM 0.6 ft▲4:25 PM 1.0 ft▼10:55 PM −0.2 ft | 1.7 | 6:52 AM · 5:53 PM | ||
| ▲6:23 AM 1.7 ft▼1:00 PM 0.5 ft▲5:21 PM 0.9 ft▼11:46 PM −0.3 ft | 2.0 | 6:53 AM · 5:54 PM | ||
| ▲7:18 AM 1.9 ft▼2:00 PM 0.5 ft▲6:21 PM 0.8 ft | 1.4 | 6:53 AM · 5:54 PM | ||
| ▼12:39 AM −0.3 ft▲8:10 AM 1.9 ft▼2:55 PM 0.4 ft▲7:23 PM 0.8 ft | 2.3 | 6:54 AM · 5:55 PM | ||
| ▼1:34 AM −0.4 ft▲9:03 AM 2.0 ft▼3:46 PM 0.3 ft▲8:27 PM 0.9 ft | 2.4 | 6:54 AM · 5:55 PM | ||
| ▼2:31 AM −0.3 ft▲9:54 AM 2.0 ft▼4:35 PM 0.3 ft▲9:30 PM 1.0 ft | 2.3 | 6:55 AM · 5:56 PM | ||
| ▼3:30 AM −0.2 ft▲10:45 AM 1.9 ft▼5:22 PM 0.3 ft▲10:35 PM 1.0 ft | 2.2 | 6:55 AM · 5:56 PM | ||
| ▼4:30 AM −0.1 ft▲11:35 AM 1.8 ft▼6:08 PM 0.3 ft▲11:42 PM 1.1 ft | 1.9 | 6:55 AM · 5:57 PM | ||
| ▼5:33 AM 0.1 ft▲12:24 PM 1.7 ft▼6:53 PM 0.2 ft | 1.6 | 6:56 AM · 5:57 PM | ||
| ▲12:50 AM 1.2 ft▼6:41 AM 0.2 ft▲1:12 PM 1.5 ft▼7:37 PM 0.2 ft | 1.2 | 6:56 AM · 5:58 PM | ||
| ▲1:58 AM 1.3 ft▼7:53 AM 0.4 ft▲1:59 PM 1.3 ft▼8:21 PM 0.2 ft | 1.1 | 6:57 AM · 5:59 PM | ||
| ▲3:07 AM 1.4 ft▼9:11 AM 0.5 ft▲2:46 PM 1.1 ft▼9:04 PM 0.1 ft | 1.2 | 6:57 AM · 5:59 PM |
Frequently asked questions
When is the highest tide in San Juan in December 2026?
On December 24 at 9:03 AM, 2.0 ft above mean lower low water (MLLW).
When is the lowest tide in San Juan in December 2026?
On December 24 at 1:34 AM, −0.4 ft.
Which days in December 2026 have spring tides in San Juan?
December 7–10, December 20–21 and December 23–27.
Where does this data come from?
These tides are an astronomical prediction computed by the Tides Pro engine with tide models and harmonic constants, checked against the official predictions of NOAA. How we validate them is in our methodology. Heights are above mean lower low water (MLLW). They do not include wind or air pressure: for navigation, use official publications.
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