Weather Forecast API

Q: Can I get tides and weather in one call?

Use /api/v1/conditions, which combines weather, marine and astronomy for a point.

Temperature, wind and gusts, rain, pressure, cloud cover and UV for any coordinates, up to 7 days ahead, with daily summaries.

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50 free requests, no credit card.

GET/api/v1/weatherMonterey Bay, California

{
    "lat": 36.62,
    "lon": -121.9,
    "timezone": "UTC",
    "days": 1,
    "source": "TidesAtlas weather engine — ECMWF-AIFS multi-model blend, bias-corrected & verified",
    "daily": [
        {
            "date": "2026-10-18",
            "temperature_max_c": 18.5,
            "temperature_min_c": 16.4,
            "precipitation_mm": 0,
            "wind_max_kmh": 20.7,
            "uv_index_max": 6.8,
            "condition": "clear",
            "sunrise": "14:16",
            "sunset": "01:28"
        },
        {
            "date": "2026-10-19",
            "temperature_max_c": 17.2,
            "temperature_min_c": 16.3,
            "precipitation_mm": 0,
            "wind_max_kmh": 23.8,
            "uv_index_max": 2.4,
            "condition": "clear",
            "sunrise": "14:17",
            "sunset": "01:27"
        }
    ],
    "hourly": [
        {
         
  …

Forecast rangeup to 7 days

Time step3 hours (UTC)

ModelECMWF AIFS multi-model blend

Coverageworldwide

Request

GEThttps://tidesatlas.com/api/v1/weather

Parameter	Type	Description
`lat, lon`	float	Coordinates (decimal degrees).
`port`	string	Instead of lat/lon: a station slug from `/api/v1/ports`.
`days`	int	1 to 7. Default 3.
`X-API-Key`	header	Your API key (or `?api_key=` in the query string).

Code examples

curl "https://tidesatlas.com/api/v1/weather?lat=36.62&lon=-121.90&days=1" \
  -H "X-API-Key: YOUR_KEY"

const params = new URLSearchParams({ lat: 36.62, lon: -121.90, days: 1 });
const res = await fetch(`https://tidesatlas.com/api/v1/weather?${params}`, {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();

import requests

r = requests.get(
    "https://tidesatlas.com/api/v1/weather",
    params={"lat": 36.62, "lon": -121.90, "days": 1},
    headers={"X-API-Key": "YOUR_KEY"},
    timeout=30,
)
data = r.json()

$ch = curl_init('https://tidesatlas.com/api/v1/weather?lat=36.62&lon=-121.90&days=1');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ['X-API-Key: YOUR_KEY'],
]);
$data = json_decode(curl_exec($ch), true);

Response

Real response for Monterey Bay, California, 18 October 2026 (arrays shortened).

{
    "lat": 36.62,
    "lon": -121.9,
    "timezone": "UTC",
    "days": 1,
    "source": "TidesAtlas weather engine — ECMWF-AIFS multi-model blend, bias-corrected & verified",
    "daily": [
        {
            "date": "2026-10-18",
            "temperature_max_c": 18.5,
            "temperature_min_c": 16.4,
            "precipitation_mm": 0,
            "wind_max_kmh": 20.7,
            "uv_index_max": 6.8,
            "condition": "clear",
            "sunrise": "14:16",
            "sunset": "01:28"
        },
        {
            "date": "2026-10-19",
            "temperature_max_c": 17.2,
            "temperature_min_c": 16.3,
            "precipitation_mm": 0,
            "wind_max_kmh": 23.8,
            "uv_index_max": 2.4,
            "condition": "clear",
            "sunrise": "14:17",
            "sunset": "01:27"
        }
    ],
    "hourly": [
        {
            "datetime": "2026-10-18T06:00:00+00:00",
            "temperature_c": 18.5,
            "feels_like_c": 18.5,
            "humidity_pct": 81,
            "precipitation_mm": 0,
            "pressure_hpa": 1015.6,
            "cloud_cover_pct": 0,
            "wind_speed_kmh": 7.2,
            "wind_direction_deg": 333,
            "wind_gust_kmh": 9,
            "uv_index": 0,
            "condition": "clear"
        },
        {
            "datetime": "2026-10-18T09:00:00+00:00",
            "temperature_c": 18.2,
            "feels_like_c": 18.2,
            "humidity_pct": 82,
            "precipitation_mm": 0,
            "pressure_hpa": 1015.3,
            "cloud_cover_pct": 0,
            "wind_speed_kmh": 11.4,
            "wind_direction_deg": 289,
            "wind_gust_kmh": 11.4,
            "uv_index": 0,
            "condition": "clear"
        }
    ]
}

Field	Meaning
`hourly[].temperature_c / feels_like_c`	Air temperature and apparent temperature, °C
`hourly[].wind_speed_kmh / wind_gust_kmh / wind_direction_deg`	Wind at 10 m and gusts, km/h; direction wind comes from
`hourly[].precipitation_mm`	Precipitation over the step, mm
`hourly[].pressure_hpa / humidity_pct / cloud_cover_pct`	Sea-level pressure, relative humidity, cloud cover
`hourly[].uv_index`	UV index
`hourly[].condition`	One of `clear`, `mostly_clear`, `partly_cloudy`, `overcast`, `fog`, `light_rain`, `rain`, `showers`, `thunderstorm`, `snow`… (WMO codes)
`daily[]`	Min/max temperature, total rain, max wind, max UV, condition, sunrise and sunset

Data sources

Forecasts come from our own weather engine: a blend of ECMWF AIFS, DWD ICON and NOAA models, bias-corrected against live station observations and continuously verified.

Good to know

Times are in UTC with lat/lon, including sunrise/sunset in daily.
Steps are 3 hours. Each requested point is cached for up to 3 hours and never reused across UTC days.
For minute-by-minute rain use /api/v1/radar; for sea conditions use the Marine API.

FAQ

Do I need a separate key for weather?

No. One API key covers every endpoint included in your pack.

Can I get tides and weather in one call?

Use /api/v1/conditions, which combines weather, marine and astronomy for a point.

Which plans include it?

The Complete pack, which also includes tides, and the weather-only pack. New accounts get 50 free requests; see the docs for current prices.