Solarposition.org

Tamuning · Guam · 13.49° N · 144.78° E

Solar position in Tamuning-Tumon-Harmon Village

Sun position, daylight and the best solar panel angle for Tamuning-Tumon-Harmon Village — computed for 13.49° N, 144.78° E, 13 m above sea level.

Sunrise today06:13102° ESE
Sunset today17:56258° WSW
Best panel angle12°year-round, facing south
Off-grid angle5°best for the darkest month

The sun right now

Azimuth180.0°
Elevation64.5°
At solar noon, 12:04Open on the sun map

Sun in Tamuning-Tumon-Harmon Village today

Sunday, 25 October 2026 · local time UTC+10

EventTimeDirection / height
Astronomical dawn05:01sun 18° below horizon
Nautical dawn05:2612° below
Civil dawn05:516° below
Sunrise06:13102° ESE
Golden hour ends06:42sun 6° up
Solar noon12:0464.5° high
Golden hour starts17:27sun 6° up
Sunset17:56258° WSW
Civil dusk18:186° below
Nautical dusk18:4312° below
Astronomical dusk19:0818° below
Day length11 h 43 min

Sun path diagram for Tamuning-Tumon-Harmon Village

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice789101112131415161718EquinoxDecember solstice7891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 80.1° at solar noon in Tamuning-Tumon-Harmon Village; on the December solstice only 53.1°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 48° 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January06:4812:3218:1511 h 28 min56.6°
February06:4112:3418:2711 h 46 min65.9°
March06:2412:2818:3112 h 07 min76.7°
April06:0412:1918:3412 h 30 min88.3°
May05:5312:1718:4112 h 48 min83.3°
June05:5412:2218:5012 h 55 min80.1°
July06:0312:2718:5112 h 48 min83.0°
August06:0812:2418:3912 h 31 min88.7°
September06:0912:1418:1812 h 08 min77.3°
October06:1212:0517:5811 h 46 min65.9°
November06:2212:0617:5011 h 28 min56.6°
December06:3812:1817:5811 h 20 min53.1°

A year of daylight in Tamuning-Tumon-Harmon Village

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Tamuning-Tumon-Harmon Village

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

12°collects the most energy over a year: 1640 kWh per kWp.

5°gives the most in the darkest month — the one an off-grid system is sized for.

20%30%40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 12°Best worst-month 5°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearAugust kWh/kWp/dayBest ÷ worst month
0°160898%4.041.4×
5° off-grid best162899%4.021.3×
12° year-round best1640100%3.941.3×
13° = latitude1640100%3.921.3×
15°1638100%3.891.3×
30°157596%3.531.4×
45°142487%2.991.7×
60°119773%2.302.5×
70°101562%1.803.5×
90°68442%1.053.6×

A fixed array in Tamuning-Tumon-Harmon Village produces the most over a year at 12°. The design month for an off-grid system is August: at 5° it makes 4.02 kWh per kWp a day, 2% more than at 12°, and costs 1% of the yearly total. Why steep panels win winter.

Off-grid solar in Tamuning-Tumon-Harmon Village at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 12° (year-round best).

0123456January: 4.06 (70°)4.1JanFebruary: 3.83 (70°)3.8FebMarch: 3.32 (70°)3.3MarApril: 2.35 (70°)2.4AprMay: 1.56 (70°)1.6MayJune: 1.24 (70°)1.2JunJuly: 1.43 (70°)1.4JulAugust: 1.80 (70°)1.8AugSeptember: 2.39 (70°)2.4SepOctober: 3.10 (70°)3.1OctNovember: 4.04 (70°)4.0NovDecember: 4.32 (70°)4.3Dec12°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 12°Mean temp.
January4.855.004.064.2627.6 °C
February5.514.723.834.6927.2 °C
March6.264.093.325.1127.4 °C
April6.742.932.355.2427.9 °C
May6.641.991.564.9628.4 °C
June6.411.601.244.6928.8 °C
July5.661.821.434.2128.5 °C
August5.132.271.803.9428.4 °C
September5.052.982.394.0128.4 °C
October4.993.843.104.1428.5 °C
November5.055.004.044.3928.7 °C
December4.855.344.324.3128.2 °C
Year5.59 avg3.46 avg1015 kWh1640 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 950 Wp of panels at 70°, versus 300 Wp at 12°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Tamuning-Tumon-Harmon Village

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.

2.3 mrow pitch at 70°

2.3 mrow pitch at 12°

Row spacing calculator

How Tamuning-Tumon-Harmon Village compares in Guam

Against the other 4 places in Guam with climate data, for a fixed array at its best angle.

3rdof 5 places in Guam for sunshine, shared: 5.59 peak sun hours a day on flat ground.

±0%solar energy a year compared with the average place in Guam: 1,640 against 1,640 kWh per kWp.

±0 mindaylight on the longest day, compared with Dededo Village: 12 h 55 min against 12 h 55 min.

12°best year-round tilt here, the same everywhere in Guam.

Of the 5 places in Guam, Yigo Village and one other place get the most sun (5.60 peak sun hours a day) and Hagåtña and 2 other places the least (5.59); Tamuning-Tumon-Harmon Village ranks joint 3rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.24 kWh a day here, against 1.24 kWh on average in Guam. The shortest day lasts 11 h 20 min, ±0 min compared with Dededo Village.

The sunniest places in Guam

Solar forecast for Tamuning-Tumon-Harmon Village, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Tamuning-Tumon-Harmon Village

What is the best solar panel angle in Tamuning-Tumon-Harmon Village?
For a fixed array facing south, the best year-round tilt in Tamuning-Tumon-Harmon Village is 12°, worth about 1640 kWh per kWp a year. An off-grid system that has to get through August does better at about 5°.
What time is sunrise and sunset in Tamuning-Tumon-Harmon Village today?
On 25 October 2026 the sun rises at 06:13 and sets at 17:56 local time (UTC+10), giving 11 h 43 min of daylight. Solar noon is at 12:04.
How many peak sun hours does Tamuning-Tumon-Harmon Village get?
On a flat surface 5.6 hours a day averaged over the year, from 4.8 in December to 6.7 in April. Panels tilted at 70° receive 1.6 sun hours a day in June.
How high does the sun get in Tamuning-Tumon-Harmon Village?
At solar noon the sun stands 80.1° above the horizon on the June solstice and 53.1° on the December solstice.
Is Tamuning-Tumon-Harmon Village a good place for solar panels?
With 5.6 peak sun hours a day on flat ground, Tamuning-Tumon-Harmon Village ranks joint 3rd of 5 places in Guam for sunshine. A 1 kWp array at the best angle (12°) makes about 1,640 kWh a year here, as much as the average place in Guam.

Places near Tamuning-Tumon-Harmon Village

All places in Guam

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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.