---
title: "Get TMY Irradiance"
method: GET
path: "/data/tmy/radiation_and_weather"
tags: ["TMY", "Radiation and Weather"]
---

# Get TMY Irradiance

`GET /data/tmy/radiation_and_weather`

Get the irradiance and weather for a Typical Meteorological Year (TMY) at a requested location, derived from satellite (clouds and irradiance over non-polar continental areas) and numerical weather models (other data). The TMY is calculated with data from 2007 to 2025.

## Query parameters

- `time_zone` string, nullable
- `period` 'PT15M' | 'PT20M' | 'PT30M' | 'PT60M', nullable
- `ghi_weight` number, double
- `dni_weight` number, double
- `probability` 'p50' | 'p75' | 'p90' | 'p95', nullable
- `format` 'json' | 'csv' | 'pvsyst' | 'sam' | 'tmy3', nullable
- `tilt` number, float, nullable
- `azimuth` number, float, nullable
- `array_type` string, nullable
- `output_parameters` string[]
- `terrain_shading` boolean
- `latitude` number, double, nullable, required
- `longitude` number, double, nullable, required

## Response `200`

OK

- TmyRadiationAndWeatherResponse
  - `estimated_actuals` object[], nullable

---

[API](https://skmtc.net/solcast/apis/solcast-api.md) · [All operations](https://skmtc.net/solcast/apis/solcast-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/solcast/solcast-api/revisions/591461e66c79/schema)