Weather in San Miguel Petapa - 14-day forecast

Detailed weather forecast for San Miguel Petapa, Guatemala: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in San Miguel Petapa

today🌧️ 28°💧 8.6 mm

Sun🌧️ 28°💧 4.6 mm

Mon🌧️ 28°💧 13 mm

Tue🌧️ 24°💧 13.4 mm

Wed🌧️ 28°💧 2.9 mm

Thu🌧️ 27°💧 1.3 mm

Fri🌧️ 28°💧 1 mm

Sat🌧️ 28°💧 0.5 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in San Miguel Petapa, the forecast high is 28°C. Typical daytime temperatures at this time of year range from 24°C to 26°C, so it will be exceptionally warm. It is warmer than 95% of similar days.

Saturday 5 Sept

28°Cexceptionally warm

usually 24°C–26°C

warmer than 95% of similar days

night: cooler than usual rain: typical rainfall wind: lighter than usual

Sunday 6 Sept

28°Cexceptionally warm

usually 24°C–26°C

warmer than 95% of similar days

night: near normal rain: typical rainfall wind: lighter than usual

Monday 7 Sept

28°Cexceptionally warm

usually 24°C–26°C

warmer than 94% of similar days

night: warmer than usual rain: more rain than usual wind: lighter than usual

Tuesday 8 Sept

24°Ccooler than usual

usually 24°C–26°C

cooler than 82% of similar days

night: near normal rain: more rain than usual wind: lighter than usual

Wednesday 9 Sept

28°Cexceptionally warm

usually 24°C–26°C

warmer than 94% of similar days

night: cooler than usual rain: typical rainfall wind: typical

Thursday 10 Sept

27°Cexceptionally warm

usually 24°C–26°C

warmer than 92% of similar days

night: near normal rain: less rain than usual wind: typical

Friday 11 Sept

28°Cexceptionally warm

usually 24°C–26°C

warmer than 95% of similar days

night: near normal rain: less rain than usual wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 25°C by day. The coolest year was 1993 (22°C) and the warmest was 1985 (30°C). The current forecast averages 27°C - higher than in 91% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - San Miguel Petapa

San Miguel Petapa - 14-day weather forecast infographic

San Miguel Petapa 30 & 45-day weather - long-range outlook

Next 15 days · forecast

26°

around 18° at night · days with rain: 14

Weeks 3-4 · avg for September

25°

around 16° at night · rain chance 68%

Weeks 5-7 · avg for October

24°

around 16° at night · rain chance 44%

The 30 & 45-day outlook for San Miguel Petapa: the next 15 days are a numerical forecast updated daily - on average 26° by day and 18° at night. Further out we rely on multi-year climate averages: around 25° in September, and about 24° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for San Miguel Petapa

Saturday5 September 2026

🌧️28°moderate rain

sunrise 05:50 · sunset 18:11 · night 17° · evening 19° · rain 8.59 mm · humidity 49% · wind 2 m/s · clouds 58%

Sunday6 September 2026

🌧️28°moderate rain

sunrise 05:50 · sunset 18:10 · night 17° · evening 20° · rain 4.63 mm · humidity 49% · wind 2 m/s · clouds 96%

Monday7 September 2026

🌧️28°moderate rain

sunrise 05:51 · sunset 18:10 · night 18° · evening 19° · rain 12.95 mm · humidity 49% · wind 2 m/s · clouds 56%

Tuesday8 September 2026

🌧️24°moderate rain

sunrise 05:51 · sunset 18:09 · night 18° · evening 19° · rain 13.44 mm · humidity 69% · wind 3 m/s · clouds 100%

Wednesday9 September 2026

🌧️28°light rain

sunrise 05:51 · sunset 18:08 · night 17° · evening 20° · rain 2.9 mm · humidity 45% · wind 3 m/s · clouds 75%

Thursday10 September 2026

🌧️27°light rain

sunrise 05:51 · sunset 18:07 · night 18° · evening 19° · rain 1.29 mm · humidity 43% · wind 3 m/s · clouds 6%

Friday11 September 2026

🌧️28°light rain

sunrise 05:51 · sunset 18:07 · night 18° · evening 21° · rain 1.02 mm · humidity 46% · wind 3 m/s · clouds 12%

Saturday12 September 2026

🌧️28°light rain

sunrise 05:51 · sunset 18:06 · night 18° · evening 20° · rain 0.48 mm · humidity 35% · wind 3 m/s · clouds 4%

Sunday13 September 2026

🌧️29°moderate rain

sunrise 05:51 · sunset 18:05 · night 18° · evening 20° · rain 10.41 mm · humidity 41% · wind 3 m/s · clouds 1%

Monday14 September 2026

🌧️28°light rain

sunrise 05:51 · sunset 18:04 · night 18° · evening 20° · rain 10.05 mm · humidity 47% · wind 2 m/s · clouds 53%

Tuesday15 September 2026

🌧️26°light rain

sunrise 05:51 · sunset 18:04 · night 19° · evening 20° · rain 8.94 mm · humidity 60% · wind 3 m/s · clouds 57%

Wednesday16 September 2026

🌧️24°moderate rain

sunrise 05:51 · sunset 18:03 · night 19° · evening 20° · rain 13.26 mm · humidity 78% · wind 2 m/s · clouds 88%

Thursday17 September 2026

🌧️24°moderate rain

sunrise 05:51 · sunset 18:02 · night 19° · evening 19° · rain 26.55 mm · humidity 81% · wind 2 m/s · clouds 97%

Friday18 September 2026

🌧️23°moderate rain

sunrise 05:51 · sunset 18:01 · night 19° · evening 20° · rain 32.37 mm · humidity 89% · wind 2 m/s · clouds 99%

Saturday19 September 2026

🌧️24°moderate rain

sunrise 05:51 · sunset 18:01 · night 20° · evening 20° · rain 22.44 mm · humidity 79% · wind 3 m/s · clouds 86%

UV index in San Miguel Petapa - is it safe to sunbathe?

Today the UV index in San Miguel Petapa is 9 (very high) - unprotected fair skin can burn in about 25 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.

San Miguel Petapa weather through the year

Upcoming public holidays in Guatemala: Independence Day — 15 September · Revolution Day — 20 October · All Saints' Day — 1 November.

Nearby and related places

AmatitlánMixcoChimaltenangoPuerto BarriosQuetzaltenangoJalapaTotonicapánCobán

FAQ - San Miguel Petapa weather

What is the weather like in San Miguel Petapa today?

Today it is about 28° during the day and 17° at night, moderate rain.

How far ahead can I check the forecast for San Miguel Petapa?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.