St. Johns River Light is a lighthouse in Duval County, Florida. It sits roughly 7.1 km (4.4 mi) NNW of Atlantic Beach. Its recorded tower height is about 25 m (82 ft). It is listed on the National Register of Historic Places.
The St. Johns River Light is a decommissioned lighthouse in Jacksonville, Florida, U.S., which stands near the mouth of the St. Johns River. It is located on the grounds of Naval Station Mayport in the Mayport area. Constructed in 1858, it was decommissioned in 1929 and replaced with a lightship. It is sometimes known as the "Old St. Johns River Light" to distinguish it from the modern St. Johns Light, built in 1954. The Old St. Johns River Light was the third lighthouse to be erected at the mouth of the St. Johns. It is the oldest one still standing, and is in fact the oldest surviving building in Mayport. It was added to the National Register of Historic Places in 1976 and underwent restoration in 1980.From the Wikipedia article “St. Johns River Light”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At St. Johns River Light the sunrise point swings a long way through the year: about 62° (ENE) at the June solstice and 117° (ESE) in late December. Sunset moves from 298° (WNW) in June to 243° (WSW) in December, and the midday sun climbs to 83° in summer but only 36° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:30 AM | 90° E | 7:38 PM | 271° W | 59° | 12h 07m |
| June solstice (Jun 21) | 6:25 AM | 62° ENE | 8:32 PM | 298° WNW | 83° | 14h 07m |
| September equinox (Sep 22) | 7:15 AM | 89° E | 7:24 PM | 271° W | 60° | 12h 09m |
| December solstice (Dec 21) | 7:19 AM | 117° ESE | 5:30 PM | 243° WSW | 36° | 10h 11m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Lighthouses work at both ends of the day: blue hour when the beacon is lit, and golden hour when white towers take on warm tones.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:58 AM | 7:24 AM | 7:59 AM | 5:12 PM | 5:48 PM | 6:14 PM | 10h 24m |
| February | 6:42 AM | 7:07 AM | 7:40 AM | 5:42 PM | 6:15 PM | 6:39 PM | 11h 07m |
| March | 7:13 AM | 7:37 AM | 8:08 AM | 7:03 PM | 7:34 PM | 7:58 PM | 11h 58m |
| April | 6:35 AM | 6:59 AM | 7:31 AM | 7:21 PM | 7:54 PM | 8:18 PM | 12h 54m |
| May | 6:06 AM | 6:32 AM | 7:06 AM | 7:40 PM | 8:13 PM | 8:40 PM | 13h 41m |
| June | 5:57 AM | 6:24 AM | 6:59 AM | 7:55 PM | 8:30 PM | 8:58 PM | 14h 06m |
| July | 6:08 AM | 6:35 AM | 7:09 AM | 7:55 PM | 8:30 PM | 8:57 PM | 13h 55m |
| August | 6:28 AM | 6:53 AM | 7:26 AM | 7:36 PM | 8:09 PM | 8:34 PM | 13h 15m |
| September | 6:47 AM | 7:11 AM | 7:43 AM | 7:01 PM | 7:33 PM | 7:57 PM | 12h 22m |
| October | 7:04 AM | 7:28 AM | 8:01 AM | 6:24 PM | 6:56 PM | 7:20 PM | 11h 27m |
| November | 6:27 AM | 6:52 AM | 7:27 AM | 4:56 PM | 5:30 PM | 5:56 PM | 10h 38m |
| December | 6:49 AM | 7:16 AM | 7:52 AM | 4:51 PM | 5:28 PM | 5:54 PM | 10h 12m |
Local time (America/New York), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From St. Johns River Light, the Milky Way core is visible in a dark sky from February through October. June gives the longest window (about 6.5 hours on a moonless night), and the core peaks around 31° above the southern horizon. Our light-pollution model puts the sky at about Bortle 5 (suburban sky), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | 1° | — |
| February | 4:46 AM – 5:46 AM | 1.0 | 19° | SE → SE |
| March | 3:55 AM – 6:15 AM | 2.3 | 27° | SE → SSE |
| April | 1:58 AM – 5:28 AM | 3.5 | 31° | SE → S |
| May | 11:55 PM – 4:55 AM | 5.0 | 31° | SE → SSW |
| June | 10:08 PM – 4:38 AM | 6.5 | 31° | SE → SW |
| July | 10:05 PM – 3:15 AM | 5.2 | 31° | SSE → SW |
| August | 9:36 PM – 1:16 AM | 3.7 | 31° | S → SW |
| September | 8:54 PM – 11:14 PM | 2.3 | 28° | SSW → SW |
| October | 8:16 PM – 9:16 PM | 1.0 | 19° | SW → SW |
| November | Below 10° in darkness | — | 4° | — |
| December | Below 10° in darkness | — | -18° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 5 Bortle 5 — Suburban sky. The Milky Way is weak near the horizon and washed out overhead; long exposures pick up a sky glow. Modeled zenith brightness ≈ 19.91 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show May as the clearest month (about 45% average cloud cover) and December as the cloudiest (66%). August is the warmest month and January the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 74 | 75 | 81 | 86 | 90 | 92 | 94 | 92 | 90 | 87 | 81 | 77 |
| Low °F | 32 | 35 | 43 | 50 | 59 | 68 | 75 | 73 | 67 | 51 | 45 | 35 |
| Precip. (in) | 2.5 | 3.2 | 2.8 | 2.4 | 3.5 | 6.7 | 5.1 | 6.6 | 5.4 | 3.5 | 2.0 | 2.9 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this lighthouse
- A telephoto from across a bay compresses the tower against cliffs or the moon.
- Many lighthouses are on private or Coast Guard property — check public access and opening hours.
- Moonrise or the Milky Way over the tower makes a classic night composition; plan with the azimuth tables.
- During blue hour, use 5–15 second exposures to capture the beam; check whether the light is still active.
- Shoot from the beach or a jetty to place the tower against open sky and sea.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Summer brings open towers and tours; autumn and winter offer storms, fewer crowds and lower sun angles.
Suggested gear: Tripod, Telephoto lens, ND filter for smooth water, Rain cover. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Tides
The nearest NOAA tide prediction station is Mayport (Ferry Depot), 547 m away. Low tide often reveals tide pools, wet-sand reflections and sea stacks.
Nearby photo spots
Other locations within 25 km of St. Johns River Light, closest first.
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State ParkFAQ
When is the best time to photograph St. Johns River Light?
What time is golden hour at St. Johns River Light?
Where does the sun rise and set at St. Johns River Light?
Can you see the Milky Way from St. Johns River Light?
Do you need a permit to photograph at St. Johns River Light?
How far is St. Johns River Light from Atlantic Beach?
Sources
Location data: Wikidata, USGS GNIS / GeoNames, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.