Quintana Roo · Mexico · 20.50° N · 86.94° W
Solar position in Cozumel
Sun position, daylight and the best solar panel angle for Cozumel — computed for 20.50° N, 86.94° W, 7 m above sea level.
The sun right now
Sun in Cozumel today
Saturday, 24 October 2026 · local time UTC−5
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:32 | sun 18° below horizon |
| Nautical dawn | 05:57 | 12° below |
| Civil dawn | 06:23 | 6° below |
| Sunrise | 06:46 | 102° ESE |
| Golden hour ends | 07:16 | sun 6° up |
| Solar noon | 12:31 | 57.6° high |
| Golden hour starts | 17:47 | sun 6° up |
| Sunset | 18:17 | 257° WSW |
| Civil dusk | 18:39 | 6° below |
| Nautical dusk | 19:05 | 12° below |
| Astronomical dusk | 19:31 | 18° below |
| Day length | 11 h 31 min | |
Sun path diagram for Cozumel
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 87.1° at solar noon in Cozumel; on the December solstice only 46.1°. Sunrise swings from 65° ENE in June to 115° ESE in December — a 50° arc along the horizon.
Sunrise, sunset and sun height by month
Values for the 21st of each month, local clock time including daylight saving time.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 07:26 | 12:59 | 18:32 | 11 h 06 min | 49.7° |
| February | 07:13 | 13:01 | 18:49 | 11 h 36 min | 59.1° |
| March | 06:50 | 12:54 | 18:59 | 12 h 08 min | 70.0° |
| April | 06:24 | 12:46 | 19:08 | 12 h 44 min | 81.5° |
| May | 06:08 | 12:44 | 19:20 | 13 h 11 min | 89.8° |
| June | 06:08 | 12:49 | 19:30 | 13 h 23 min | 87.1° |
| July | 06:18 | 12:54 | 19:29 | 13 h 11 min | 89.9° |
| August | 06:29 | 12:50 | 19:12 | 12 h 43 min | 81.4° |
| September | 06:36 | 12:40 | 18:44 | 12 h 08 min | 70.0° |
| October | 06:45 | 12:32 | 18:19 | 11 h 34 min | 58.6° |
| November | 07:01 | 12:33 | 18:06 | 11 h 05 min | 49.5° |
| December | 07:19 | 12:45 | 18:12 | 10 h 53 min | 46.1° |
A year of daylight in Cozumel
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Cozumel
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
19°collects the most energy over a year: 1615 kWh per kWp.
24°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1542 | 95% | 3.07 | 1.7× |
| 15° | 1612 | 100% | 3.72 | 1.4× |
| 19° year-round best | 1615 | 100% | 3.86 | 1.3× |
| 21° = latitude | 1614 | 100% | 3.92 | 1.3× |
| 24° off-grid best | 1609 | 100% | 4.01 | 1.3× |
| 30° | 1589 | 98% | 4.15 | 1.3× |
| 45° | 1475 | 91% | 4.32 | 1.5× |
| 60° | 1279 | 79% | 4.24 | 1.9× |
| 70° | 1112 | 69% | 4.04 | 2.3× |
| 90° | 752 | 47% | 3.31 | 3.2× |
A fixed array in Cozumel produces the most over a year at 19°. The design month for an off-grid system is December: at 24° it makes 4.01 kWh per kWp a day, 4% more than at 19°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Cozumel at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 19° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 19° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.04 | 4.77 | 3.93 | 3.92 | 24.4 °C |
| February | 4.94 | 4.85 | 3.98 | 4.52 | 25.0 °C |
| March | 5.87 | 4.44 | 3.63 | 5.00 | 25.6 °C |
| April | 6.42 | 3.40 | 2.75 | 5.04 | 26.8 °C |
| May | 6.34 | 2.56 | 2.04 | 4.70 | 27.7 °C |
| June | 5.73 | 2.19 | 1.73 | 4.17 | 27.9 °C |
| July | 6.26 | 2.41 | 1.91 | 4.58 | 28.1 °C |
| August | 6.11 | 2.94 | 2.36 | 4.66 | 28.4 °C |
| September | 5.46 | 3.65 | 2.94 | 4.45 | 28.1 °C |
| October | 4.75 | 4.20 | 3.41 | 4.17 | 27.2 °C |
| November | 4.24 | 4.78 | 3.91 | 4.03 | 25.8 °C |
| December | 3.91 | 4.92 | 4.04 | 3.86 | 25.1 °C |
| Year | 5.34 avg | 3.75 avg | 1112 kWh | 1615 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 680 Wp of panels at 70°, versus 310 Wp at 19°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Cozumel
Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.
2.7 mrow pitch at 70°
2.6 mrow pitch at 19°
How Cozumel compares in Mexico
Against the other 624 places in Mexico with climate data, for a fixed array at its best angle.
470thof 625 places in Mexico for sunshine, shared: 5.34 peak sun hours a day on flat ground.
−8%solar energy a year compared with the average place in Mexico: 1,615 against 1,754 kWh per kWp.
+4 mindaylight on the longest day, compared with Mexico City: 13 h 23 min against 13 h 18 min.
19°best year-round tilt here; across Mexico it runs from 15° in Coatzacoalcos to 30° in Tijuana.
Of the 625 places in Mexico, Ciudad Constitución gets the most sun (6.12 peak sun hours a day) and Poza Rica de Hidalgo and one other place the least (4.59); Cozumel ranks joint 470th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.73 kWh a day here, against 1.82 kWh on average in Mexico. The shortest day lasts 10 h 53 min, −4 min compared with Mexico City.
Solar forecast for Cozumel, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Cozumel
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A free, live card for Cozumel: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.