Methodology and data attribution

Source and period

Climate data is generated at build time from the NASA POWER Climatology API. The current dataset covers January 1991–December 2020; it records the source metadata returned with each API request.

Data attribution: NASA POWER. NASA's Earth-science data policy supports full and open sharing, while its public-use guidance says NASA should be acknowledged and its name must not imply endorsement. This site uses a factual source attribution and no NASA logos. Recheck the applicable terms before any commercial launch.

Metrics

Mean temperature

T2M: Temperature at 2 Meters, shown in °C.

Average daily high

T2M_MAX_AVG: Temperature at 2 Meters Maximum Average, shown in °C. NASA POWER's similarly named T2M_MAX is a monthly extreme, so this site does not use it as an average daily high.

Rainfall

PRECTOTCORR: Precipitation Corrected. NASA POWER supplies mm/day; this site multiplies it by calendar days in the month to show an estimated monthly amount. It is not rainy-day count.

Solar radiation

ALLSKY_SFC_SW_DWN: All Sky Surface Shortwave Downward Irradiance, shown in kWh/m²/day. It is not hours of sunshine.

Limits

Each destination is a representative API point, not a claim about every neighbourhood, beach, mountain, or island microclimate. Historical climate averages describe past conditions; they cannot predict weather for a specific holiday.

The generator rejects NASA POWER's reported fill value (-999) instead of replacing missing data with zero.