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Maritime · head to head

Clarksons vs StormGlass

Clarksons logo

Clarksons

Maritime

World's leading shipbroker and data provider

From
$3000/month
Rated
-
Full reviewWebsite
StormGlass logo

StormGlass

Maritime

Global weather data API for maritime

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only StormGlass has a free tier, so it costs nothing to try first.
  • Each has a real cost: Clarksons no pricing published on website; StormGlass the free tier allows 10 API requests per day and is not licensed for commercial use
  • They diverge on capability: Clarksons covers Market intelligence, StormGlass covers Marine weather data.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Clarksons and StormGlass actually diverge.

Attributes where Clarksons and StormGlass differ
AttributeClarksonsStormGlass
Starting price$3000/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsWeb, ApiApi
Founded18522017

Identical on both: user rating (Not yet rated), category (Maritime).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Clarksons

  • Market intelligence
  • Fleet database
  • Freight rates
  • Research reports
  • API
  • Excel add-in
  • Data exports
  • Web support

Only in StormGlass

  • Marine weather data
  • Wave forecasts
  • Tide data
  • Historical weather
  • REST API
  • Webhooks
  • SDKs

Both cover

  • Api support

What people use each for

The jobs each tool is most often brought in to do.

Clarksons

  • Maritime brokerage and shipping servicesnot StormGlass
  • Ship finance and leasingnot StormGlass
  • Shipping market researchnot StormGlass
  • Port services and operationsnot StormGlass

StormGlass

  • Pulling marine weather and sea state forecasts into a vessel routing or planning toolnot Clarksons
  • Adding tide, wave and wind data to a maritime or coastal applicationnot Clarksons

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Clarksons

  • No pricing published on website
  • Pricing model not disclosed
  • Enterprise maritime services requiring custom quotes
  • Multiple business lines (broking, finance, research, ports, tech) with different pricing
  • Direct sales contact required

StormGlass

  • The free tier allows 10 API requests per day and is not licensed for commercial use
  • Commercial use and any support at all start at the Medium plan, 49 euros a month
  • The Small plan at 19 euros a month has no support and no commercial licence
  • Request allowances are daily rather than monthly, so a burst of traffic cannot borrow against a quiet week

Pricing, plan by plan

Clarksons

$3000/month
  • Shipping Intelligence Network$5000/month
    • Market data
    • Fleet database
    • Research reports

StormGlass

Free
  • FreeFree
    • 10 requests per day
    • All weather parameters
    • Not for commercial use
  • Small$19/month
    • 500 requests per day
    • All weather parameters
    • 10% annual discount available
  • Medium$49/month
    • 5000 requests per day
    • All weather parameters
    • Full support
  • Large$129/month
    • 25000 requests per day
    • All weather parameters
    • Full support

Which should you pick?

Choose Clarksons if

  • You need market intelligence.
  • You work on Web, Api.
  • You also want fleet database.
Clarksons review

Choose StormGlass if

  • You need marine weather data.
  • You want to start without paying.
  • You work on Api.
  • You also want wave forecasts.
StormGlass review

Questions people ask

Is Clarksons or StormGlass better?
Neither clearly leads. Clarksons starts at $3000/month and StormGlass at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Clarksons or StormGlass?
StormGlass has a free tier; the other does not. Paid plans start at $3000/month for Clarksons and Free for StormGlass.
Does Clarksons or StormGlass run on more platforms?
Clarksons runs on Web, Api. StormGlass runs on Api.
Can I use StormGlass for free?
Yes. StormGlass has a free tier, so you can try it without paying. Clarksons starts at $3000/month.
What is Clarksons best used for?
Clarksons is most often used for maritime brokerage and shipping services, ship finance and leasing, shipping market research, port services and operations. Of those, maritime brokerage and shipping services and ship finance and leasing are not what StormGlass is typically brought in for.
What can Clarksons do that StormGlass cannot?
Clarksons covers Market intelligence, Fleet database, Freight rates, Research reports. StormGlass covers Marine weather data, Wave forecasts, Tide data, Historical weather. Both handle Api support.

Answered from the vendors’ own pages

Clarksons: How much does Clarksons charge for its services?

Clarksons does not publish pricing on its website. The company operates as a marine and shipping services provider with five business lines. Pricing is customized by service line and must be obtained by contacting Clarksons directly.

Source
StormGlass: Is there a free tier available?

Yes, Stormglass offers a free plan with 10 API requests per day, including all weather parameters, but it is not permitted for commercial use.

Source
Clarksons: Which Clarksons division should I contact for pricing?

Clarksons has five business divisions: Broking, Financial Services, Research, Port Services, and Technology. Contact their specific department for pricing relevant to your needs.

Source
StormGlass: What does the Medium plan include?

The Medium plan costs 49 EUR per month and includes 5000 daily requests, all weather parameters, and full support for commercial use.

Source
StormGlass: Is annual billing available?

Yes, a 10% discount is available when paying annually on Small, Medium, and Large plans.

Source
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